Yeah, might want to temper that first statement and stick with just the last one. The last one speaks to your experiences. The first one states that every AMD card made had these issues. That is false.
I own 6800xt, gpu hotspot never runs above 85'c pushing hard on FS - Ultra QHD setting, now that I undervolt it, it's actually boost more, and only run the average of 80-82'c hotspot temp, while the gpu core temp itself stays within 60-70s degree, in PUBG, 1440 qhd ultra-setting, it runs about the same temperatures as well. Playing CSGO, my new fav game, a few days into it as noob, my GPU only runs only at 48-52'c temp with hotspot reaching 58-60'c occasionally.
In term of driver, AMD is more solid on what stated as WHQL not optional on their website, the optional tend to have issue not all users will be affected but I was affected and I learned about that quickly, weeks with WHQL driver as per their support website, never encounter drama not once. It's just, when we agree being the beta testers by keep updating the last drivers that ain't even WHQL certified, just beware, we may encounter issues. AMD always stated this on their RELEASE NOTE, always! Issue here, issue there, just beware of that, wanna run issue free? Simple, use what's known as the last stable driver. It's just like BIOS, people willing to update and install beta version, to complain about issues, are just not smart. LOL