MiyazakiHatesKojima
You should probably swing by the Steam Hardware Survey (updated monthly) if you want to get an idea of the kind of hardware most people have and more importantly the percentage of people who are rocking the high end: -
As it currently stands the most popular GPU is the 1060 at around 11.21% which is from the last gen.
The most popular current gen GPU is the 2060 at 2.47%
Barely anyone has the 2080 or it's variants with 2080 at 0.96% 2080ti at 0.88% and 2080 Super at 0.68%
Certainly you can guarantee that there's going to be some whale out there stuffing 4 of the latest top end GPUs into their custom built super water cooled RGB Eye Sore for some Builder Forum E-Bragging Rights, but they are very much the exception versus the rule. Most people look for the best bang for buck they can get and budget accordingly. There comes a certain point when GPU grunt just doesn't do you any favours unless you've a high resolution monitor set up to match and if you look under the monitor resolutions you'll see that 1920x1080 is the most common resolution by a country mile (65.48%) whilst 4K is only 2.23%.
Personally I rock a 27" monitor (2560x1440 Dell Ultrasharp) and albeit I have a decent CPU (17-9700K), 32 GB RAM (I use my Rig for work as well as play) on the GPU front I only run a 1070ti which happily runs most modern AAA games with pretty much all the bells and whistles on (save ray tracing) if I knock the resolution down to 1920x1080 (Death Stranding looks glorious btw). Personally until I either upgrade the monitor or new games become significantly more demanding I'm not feeling the necessity to update my GPU at present, and truth is if I do, I won't be buying the ridiculously priced latest high end versus something a bit more modest in scope that hits a nice balance of price point coupled with performance.