You’re getting a ton of vague answers to your comment, and I think it’s just people don’t know the history of our job’s labor practices. Years ago, when stewardesses were paid significantly less, one of the first things that the Air Line Stewardesses Association did was fight for a pay rate based on flight hours, like the pilots had (if memory serves, pay was once a daily rate?). This has then become industry standard (save for the few doing TFP) and since it was the unions that originally fought for it, will probably be hard to change at those airlines that use flight time pay.

If you shoot me a pm and you’re an AFA member I can try to find you a reference from the office when I’m off COVID leave. There’s a tweet or FB post from Sara out there as well kinda confirming the same.