Source: work at a FAANG which has had layoffs.
There is still some hiring going on, but obviously very much reduced so just by the numbers it's going to be harder. I don't think actual $ offers are lower, if anything they will be better since new hires get better stock grant prices. I think one factor is that you won't see bidding wars like we did in 2021 since it's harder to get multiple offers.
As far as firing and rehiring at lower prices - I honestly don't think this is a thing at larger tech companies. It just takes too long to ramp up new people. I think these companies just needed to shed headcount due to over hiring and the fact that no one quit during the last few years!
Hiring remote people is much much harder now though. Remote is non-existent for new hires, maybe you can get it after working on site a bit.
As far as the process itself, I don't think anything has really changed. Expect a tech screen, then an interview loop with leet code coding, system design, and behavioral sessions.
All that said, I think it seems to be a good time to be a specialist. It is still hard to hire embedded engineers for example.