Where are you buying graphics cards with less than two years of warranty? If your GPU budget is that slim, you should probably be relying on integrated GPUs.

Probably in every place that is not the European Union which mandates 2 year warranties. Rest of the world iirc is 1-year.

I did check about five brands of AMD graphics card on Newegg US before posting, and didn't see anything shorter than two years, with three and five years quite common. I also once bought an AMD card with a lifetime warranty, though I believe that particular manufacturer has since stopped offering those terms on any of their models.

So the question remains valid: what are the GPUs being sold with super short warranties, and are they even worth buying in the first place?

The situation was much different 5 or 10 years ago.

One year was the best you'd get, 90 days was common.