Yeah, I was a loyal Android user for 15 years.
For the first half, custom ROMs were a massive boost to the experience, but I never really bothered after 2018; You had to install so much of google's stuff to get anywhere near proper experience that it just wasn't worth it, and even then many apps were starting to throw a fit when they detected a rooted device.
And at the same time, the stock android experience from most vendors was now good enough. I didn't even check custom ROM compatibly for my last Android two purchases (both Samsung). But it was nice to have the option of rooting and maybe finding/making a custom ROM Samsung removed that in their last update to One UI :(