I also used Firefox’s containers a lot. In my case, I often need to log into multiple AWS simultaneously, or at least bounce between them quickly enough to be a major hassle if I had to log out of one to log into the other. Now I use Safari’s profiles to do that.

What’s your Firefox use case that Orion doesn’t handle? (Sincere question; that wasn’t meant as “it works for me so stop complaining!” snark.)