Honestly, I'm surprised that it worked without first flashing the T290XXU3CUG4 OEM base first, since that was the transition to the Android 11.0 kernel. In the past, that's been an issue.
I've got three Galaxy Tab A7's (SM-T500s) now, and so that's the next big project. I've been putting it off because this is the first release that's been using dynamic partitioning, which is going to be a major hassle. Fortunately, it's going to be raining in Seattle for the entire 4-day holiday weekend, so I'll have lots of time indoors to focus on my hobbies.
Last week I also got an insane deal on a Galaxy Tab S7 FE (SM-T733), so that's been added to my list for TWRP and Nexus Stock supported devices.