I don't really like the idea of a gaming laptop, for high(ish) performance even for pc we need properly cooled case with large heatsinks on cpu, on vrm and on vga too and big fans, for quiet operation at least. Not to mention they sell it under the same name and offer different performance.
But for that money and under current conditions, i would probably think about the laptop if i have to buy everything brand new from the ground up, but still, i like PC better and since already have a complete PC.. so i only would like upgrade my VGA but not at these prices, but understand where you're coming from.
yeah I refuse to spend double the money on a graphics card out of principle - especially not when I bought my current graphics card, about this time (or late summer) last year, and spent 453$ on it. And it was a mid-high end product when I bought it. Now they expect us to pay double that for a mid end card like the 6600XT or 3060? No fanks mate. Having a working desktop sans video card won't stop me from getting a RTX 3060 equipped laptop since it will cost about as much as a 3060 alone, especially when I can always stick my old gtx 1070 in my desktop and have two working computers. I can't justify spending that much money for a video card. We're voting with our wallets here, please keep that in mind.
As for laptop cooling performance, it really depends on the model. My last four gaming laptops all survived and are in running condition - starting with my ASUS G751GY witch I bought back in 2015 - battery is dead, the touchpad is kind of gross and left click button no longer works, but the laptop will run any benchmark for hours perfectly stable. Took it out of it's box last month to fix the touchpad button and change the thermal paste. My 2017 MSI GV72 8RW is also perfectly functional - surviving both me and my kid gaming on it (kid's been using it for the last year or so), despite the CPU often reaching 96C under load. Replaced it last week with my old TUF FA506IV witch again is a bit on the toasty side, CPU can go up to 93-94C under load, and it's going great. Battery on the MSI can still manage about 1h 30 min, and the FA506 gets 4-5 hours still.
To be fair, the FA506IV was replaced in the first 5 weeks of purchasing. It started giving "DPC_WATCHDOG_VIOLATION BSODs that would not go away until I uninstalled either the iGPU or dGPU driver in safe mode. No artifacting, no overheating, no lockups tho' so I have no idea what was wrong with it. ASUS replaced it under warranty, and I've had no issues with the 2nd one since.