I thought Nitter stopped working sometime after Musk's takeover. Maybe just the specific mirror I used?

Nitter works sometimes depending on which host you hit and when. Nitter.net hasn't worked me all day, but there are others that do. Nitter.cz seems to be working right now.

https://nitter.cz/NASAInSight/status/1590736220199735296#m

I had been hitting one host almost exclusively. That host probably went down and I didn't think to move to another. Thanks!

It still works fine, though it's largely dependent upon an api that may be retired.