I guess I should amend my comment to say that I've never experienced a change BACK to what previously worked with Apple, once they make the changes they want. Not in any meaningful way to this Non-tech, regular consumer anyway. I just end up adapting to the new interface or whatever as best I can, and sometimes that means returning the $500 watch and sticking with my trusty 1st gen (or whatever gen was working for me) as long as I can. I am super busy in the real world and dealing with Long Covid for over 2 years now, trying to get my life back together and I just don't have time to struggle with a bad watch interface that just makes me more miserable when there are other options - like wearable O2 monitors that actually work, etc. and will save me $100's in the process. I did love the always-on feature working in Healthcare, but there are other options for that as well when counting respirations and heartbeats for a full minute in a newborn for instance.
Why don't I just give up on Apple all together you ask? Well, the answer is really simple actually. 1. All the tech companies do the same thing. 2. The other options are MS Windows (hate it!!!) and Android/Google. Hate that as well. I have a Samsung phone for my business and it's awful and not nearly as intuitive as the iPhone.
Maybe someday by the time my Apple Watch SE 1st gen quits working, Apple will have returned the good modular interface to the Apple Watch, but I don't have the time or energy to struggle with it now so I will do what I have always done: find another solution that works for me.
Good luck to all and again, I hope everyone finds the best solutions for them.
P.S. Tried the Watch Smith app and didn't like that interface either! ;-)