US student loan changes

I’d like the FQ answer before any debate. I’ve done searches, the official sources (studentaid, Mohela) have not updated anything from what I’ve seen and I’ve not had any notice on my own loans while I’m trying to get the correct information for someone else worried.

  1. I understand there’s some crackdowns on defaulted loans, mine have been paid since mid-Covid after a brief pause. Apparently other people have been on forbearance since 2020, I don’t remember being given the option but I might have had to to set up PSLF.
  2. The SAVE program was ruled in courts to be not set up properly and is probably gone. Does this affect the other income-based plans (PAYE, IBR, ICR)? What’s left?
  3. Changing plans has been locked for now?
  4. Some speculative stuff on bills in congress, but what’s actually certain right now?