Nvidia supports 13 year old hardware and newest kernels with 580
At some point when running your 14 year old GPU
Pascal (GTX 10 series) and Volta (expensive workstation stuff) cards from 8-10 years ago are forced to 580 too. EDIT: and to be clear this is an issue with all of the 580xx versions of packages, specifically because Arch put them into the AUR (though this directly isn't OP's issue).
Having a 1050Ti... I like the idea of an AMD (Polaris+) card, but I don't really want to buy a side-grade from the internet. I got really good deals on my other hardware (combo deals from 2019) so $100 more would actually be a decent chunk. Really just seems to me that the GPU market is behind due to crypto->NFTs->AI.
You might be right on FOSS drivers, but they seem to be still rough-around-the-edges whenever I look into it. In multiple aspects (performance, feature/technology support, segfaults). It might be true that I may not notice in some cases (lighter applications), though a 1050 Ti doesn't have the headroom where the performance could be cut in half and not result in noticeable instability.