There is no wide-spread issues with the 5600X as you imply. You are just taking a few reddit posts (which aren't even verified evidence FYI) and extrapolating those to the extreme. I've seen FAR more posts about heat issues on the Intel 10xx series than AMD WHEA errors.
In addition, your pricing estimates are misleading. You are forgetting the cost of a CPU cooler. The AMD processor comes with one, not to mention Intel is harder to cool due to the higher power requirements. In addition, in order to get the most out of an Intel CPU you need a Z class motherboard (You can't even enable XMP on anything but Z class for Intel). The 5600X on the otherhand runs just fine on a $65 motherboard and you can still run your RAM at high frequencies.
Last you are quoting the inflated AMD prices, not MSRP. There's a reason the Intel CPUs are still in stock, they are worse in every metric often by a wide margin. Hell the 5600X matches in multi-threading performance to Intel's higher core count parts and consumes half the power while doing it.
If you want the best CPU on the market, you buy the 5800X / 5900X / 5950X (depending on core count need). If you want a budget CPU you get the 3600. The 10400f is a decent proposition and beats the 3600 in gaming by a small amount but at this price point people won't have a GPU that can realize the difference and in order to get that performance out of the 10400f you need a Z class motherboard. Your performance advantage is moot with a B class mobo. The 3600 beats the 10400f in every other metric though, so really you are buying it if you only care about gaming.
Those will relax as the market returns to normal demand levels. Right now demand was placed at around 2.8 times normal.
That's very expensive for a 3600. That said the 3600 still comes with a CPU cooler and can run just fine on a low end motherboard. In the end you are going to be paying about the same for the Intel and AMD platform. Retailers in your area seem to have up-priced the AMD CPU knowing this.
