Agree, i have almost always been using ati/amd gpus and i was able to confirm other people issues literally 2, maybe 3 times. My secret to correct operation of all things is to perform clean windows install after swapping to new gpu and keep all drivers up to date to latest version, including chipset, soundcard, networking card and other devices. Also latest firmware/bios for all of them.
I perform clean windows install twice a year, every time new rtm windows 10 build gets released. I'm avoiding upgrade because usually upgrades are causing many problems sooner or later, same way i go with my ubuntu, not just windows as the same applies to both of these OSes. About using ddu... i had to use it literally 3 times in last 5 years, i do not recommend using it as replacement of uninstaller provided with a driver and from posts i see on guru3d seems like many of you are using DDU that way, do not do it this way, stop it, literally. Wagnard will tell you exactly the same thing. This tool is not made to replace uninstaller, it is made to be a service tool which you should use as last step before windows reinstall in solving problems with gpu driver.
Good example for all these 5700/xt issues is hardware unboxed yt channel, they claim they do not have such severe issues or any actual real issues with their 5700/xt cards and are wondering what their viewers are talking about.
Another thing is what people call as severe issues. Some people claim that some few pixels shimmering over fire or in fog in the witcher 3 are gamebreaking bug and to them this is a valid reason to replace properly operating gpu with competition's gpu. Someone else will call amd incompetent after facing some bug once and being unable to reproduce this bug anymore but this one occurrence to such person is enough to call amd crap and go buy nvidia gpu. Severe bug is something what you can reproduce and it makes your pc unstable or unusable, not what occurred once and you solved it with pressing reboot button on your pc case. But... there are these bad cases which can be hard to trace: software conflicts. Even these you can't call problem with a driver. Recently i had a problem like this, even posted it here on guru3d in one of previous driver threads: ac unity had fps dropped by 70% when booting on next day. It took me a week or so to trace cause of the issue. That was some crazy conflict between gpu driver, the game and.... gigabyte aorus engine tool. Once i uninstalled that tool unity was working properly any time i launched it, any day i launched it and so on.
One more thing is OC. Many people keep their hardware overclocked, especially popular oc now is ram oc as widespread knowledge is ryzen cpus do better with ram tweaked as much as possible. I keep my ram OCed too, from 3200MHz to 3600MHz and it is stable. Same probably is in other users case, 99,(9)% time this oc is stable but sometimes it can be misbehaving and causing issues which users point out as driver issue while in reality these can be caused by oc.
Concluding: perform clean windows install, update firmware/bios to latest versions for all applicable components, update all possible drivers to latest available versions, bring your hardware back to stock settings (remove oc), remove all useless software and control panels. If after all this your problems still occur then contact amd support to provide all info about bug and/or gpu manufacturer to rma your card or to make them provide you custom bios fixing such problem.
And all that assuming you have properly working all other components in the first place...