7D2D is a very different category of game type compared to any of the games you mentioned. This game is like the Crysis of it's time (aka a bit ahead of it's time). With all the constant structural integrity calculations, weather / temperature system, thousands of HD entity / block textures appearing on screen at any given time (unlike static worlds where it's basically just a single image stretched out like a canvas with large simple entities on top), AI spawn system, hundreds of entity animations like grass, vehicles and other entity behaviors, etc. The reason most games, especially AAA titles can be played on even the oldest / worst gaming PCs is because it's much easier to adjust game settings to work on old / crappy hardware since there's so little calculations and stuff within the game. It's basically all just fancy textures that make it demanding on hardware which is easy to adjust. In a game like this, you can't just remove structural integrity or any of the other above mentioned features (at least not for the most part). Also, I can't believe you play Fallout 76 and No Man's Sky... terrible games.
So ya, saying your GPU can handle newer games is irrelevant. It'd be the same as me telling you my hot plate can cook almost anything, but it can't cook a pizza very well... because it lacks features, like an oven.