I understand why this warning is necessary - namely, there is no way to enforce the behavior that we want.
On the other hand, users shouldn't be scared into thinking that the process is somehow unpredictable or inherently risky. If directions are followed, there is virtually no chance of using an out-of-date or wrong Tor Browser version. I started using Whonix DispVMs when I wrote my first post in the other thread nearly 7 months ago. Since then (as far as I can remember), I've only updated my Tor Browser using the Internal Updater, which pops up within a few seconds of launching Tor Browser in any DispVM. In fact, the annoyance of the pop-up leads one to update the DisposableVM-Template as soon as possible.
Related note: The default update setting in TB preferences is to update automatically. I set mine to notify-only since having every DispVM update automatically is annoying x2.
I guess you are not just referring to the specific "check Tor Browser
warning" but also the general "Advanced users only!" warning at the very
top of that wiki page?
Sure. I am all for describing things as close to The One Truth (tm) as
possible. If you see a way to rewrite the warnings so they sound more
accurate, please go for it.
My intention with the general "Advanced users only!" warning is just to
make sure users read these documentation before using DispVMs. Then
DispVMs are great. However, just "qvm-create-default-dvm" and then use
Firefox in the DispVM and expect anonymity is a failure I like to prevent.