Have you checked out Affinity? They support Mac and iPad, and are comparable with the core Adobe suite. Its a buy once scenario (per major version release). My only problem is they don’t support Linux.
Of note, they were purchased last year by Canva, but it has been stated they will keep the Affinity products separate for purchase.
I recently swapped to Mint and have been enjoying it. I still have Windows as my daily driver and I have a handful of things that I still need windows for, but I have a media center and a gaming PC set up both on mint. There was an odd quirk with Steam where it didn’t launch after some update, and it was a bit asinine to be honest. But after a few hours of research online I found the issue and modified a file so it loaded properly. Stuff like that sucks, but it gives me experience navigating the OS and understanding how it works.
To your point though, it overall just works. My wife uses it no problem and is getting use to where things are. I maintain the system though, ensuring updates are applied and searching for solutions when needed (for instance, we use caffeine to stop the monitor from going to sleep when playing games with a controller)