I certainly think this applies strongly to more subjective things like DLSS/FSR/FG image quality, I do get sick of hearing outright negativity for those from people who've not actually experienced it, but I'd argue that a cards rast performance is a lot easier to judge from reviews alone. Just some reviewers are more thorough than others, and some go out of their way to find weaknesses etc.
So I agree somewhat but not fully, far more can be ascertained from a review comparing like for like performance against other video cards, the proof is much more in the numbers than it is subjective for this type of thing imo. But, I certainly have heard from a lot of non-3080 buyers tearing strips of it for only having 10GB VRAM, but as an owner I've never once hit the limit, and I game at 4k, yet other people keep telling me how bad it is. Experience certainly seals the deal.
It's not just that. Reviewers generally shat on Intel's Comet Lake and Rocket Lake for their high power consumption and low-to-no IPC increase compared to Coffee Lake. They only forgot to add that high power consumption is nowhere to be seen in everyday use, they're super efficient at idle, and that they're super easy to cool because of the large 14 nm central die, not to mention the PL switches which make them just as configurable as AMD's PPT. I had to buy an 11700 to find all this out. In fact, it was much easier to cool than the overhyped R5 3600 (I had one of those too). They (especially Steve at HUB) also called Intel out because not every B560 motherboard that they tested could push unlimited power through the CPU, which is a ridiculous expectation to begin with.
Edit: they also forgot to add (to the topic of IPC increase) that people don't usually upgrade with every generation, so a Coffee Lake comparison isn't what they should have judged Comet / Rocket Lake by.
Reviewers shit on the Radeon 6400 / 6500 XT duo as well, although you only hear positives from owners (myself included). Actually, reviewers tend to crap on everything that doesn't produce 5% more FPS than the competition, and for a lower price, even though no one can see a 5% difference in a game, especially when you only have one graphics card with nothing to compare it to.
This is the beauty of the PC space we are all the same yet so different too. I agree with you on reviewers but it does have a silver lining, during the height of Covid Inwin launched an AIO. It is called the SR series and came in 240 and 360 variants.
There are 5 reviews on TPU and none of them are in English. There are also 10 or so videos in English on the cooler on Youtube and 2 of them are reviews. Due to none of the big Media outlets covering it as I assume no samples were sent out the cooler launched with no fanfare. Well that had the cooler within like a week of launch going for $119.99 for the 360 version. This is when Asetek coolers like the Corsair 360 AIOs were over $200 for the same. The Inwin has a bigger cold plate, a huge head with 2 pumps and ARGB with one of the easiest installs ever. I have used 5 of them in builds and have a 240 cooling a 5900X that is pretty impressive for the temps. The last 360 I bought was $109.99.
Where I disagree is display technology. 4K is a dream on a desktop, especially at bigger sizes. The pixel density is crazy. If you read Comic books think of the Omnibus you could buy today vs the actual Comic book in terms of the difference in Animated content, some Games, reading text and watching videos in Windowed mode is impressive. OLED and VA even though they are different both look very beautiful in 4K if they (in the case of VA) have 400+ nits of brightness. A 4K 144hz panel is the cat's meow and Freesync/VRR is a must as the beauty of that is there is range of 47-144 HZ. It does suck though that you have to spend to enjoy it.
One of the things I do is read and watch reviews but also read user reviews on the retail site for the same product. I had a 2 page "conversation" with a user the other day on the 5900x/5800X3D and 5600X and even though I have used heavily all of those CPUs he still "knew" more than me about how they were different and should be avoided vs Intel. It is kind of sad though because that used to be reserved on Reddit but I find on TPU there are a few users that are Electronics Engineers because they can read and watch a video on the product.
That's another thing: most reviewers only test what companies send to them. That's why I love smaller YouTube channels like RandomGamingHD, and that's why I love TPU as well, to be fair. They go out of their ways to get samples from not so hyped sources.
As for 4K, I would probably agree with you if I ever sat down in front of a 4K monitor... but I don't want to.
Higher resolutions need faster graphics cards, and I don't have infinite money, unfortunately.
I do have a 55" 4K TV though, but I sit far enough from it not to notice any difference between 1080p and 4K content.