

Tons of software meant to run on 32-bit hasn’t been updated to run on 64-bit natively.
32bit only Linux apps are basically non-existent, anything with the source available and maintainers would have been ported at some point in the last 2 decades, otherwise they have very specific technical reasons for being 32bit only (like OBS iiuc), the source has been lost somehow, or it’s a proprietary program where the company has no interest (e.g. Valve with Steam)
In fact I think Steam might really be it.
I switched a year ago, after trying and failing multiple times over the years whenever I gave it a try.
I find I’m a lot more willing to let issues slide though, like I’ve had some Thunar crashes which I’m cool with since there’s like 4 devs maintaining it, vs. the multi-billion dollar company working on Explorer which I expect better from. Also unsurprisingly the only actual shop-stopper issue I’ve had was with a memory leak in the Nvidia drivers, the actual FLOSS stuff has been great.