It's weird how people always complain about lack of easy profile switching in Firefox. If one tells them that what they are really looking for is containers, they dismiss containers, but then proceed to complain that profiles don't have the same features. If you want sync across browser instances, manage them with one Firefox account... You really want containers not profiles.
Meanwhile, it’s not weird that people think what other people actually want are weird.
The UI is soooo much better than the current Mac OS.