I'm running a 2080 in my desktop, and I haven't run into a game yet that I need a better card to run (at least, not with my 1080p monitors, which I prefer over higher-res ones). I also got a Framework 16, with the discrete Radeon 7700S GPU, and everything on it runs butter-smooth.
Point is, I can't see justifying something that is $1600 just so I can run Starsector at the same 60 FPS I already get. It would take some truly groundbreaking game to come along to force me to consider upgrading to these ridiculous cards, and I don't see that happening given the current consoles out there.