@bonifartius I alredy did one update without an account. So you can definately update without issue. That said it is android 12 so updates will come around, even if they are optional.
This brand has all your usual android apps including a browser and the ability to use anything in android (including access to samba)
I have no specific use for color. Just that i often read technical documents and charts are often in color. so it serves a functional purpose to be able to see the colors and properly read charts in books. Math and other stuff its not so critical i guess and just nice.
If I use it for note taking, which i may not, it has the advantage of being able to draw in multiple colors if I care.