I think the original reply was talking about countries like USA, Canada, Australia, NZ etc that will have to do ETIAS.
Schengen areas are still true freedom of movement.
I am an American citizen and think all electronic visas are a silly pain in the ass, but are better than traditional visas which require mailing your passport somewhere.
The world should strive for true freedom of movement for all people. Show up in person, walk through customs like everyone else regardless of passport.
ETIAS is therefore a regression from the norm. But, Vietnam used to be paper visa only, and now is E-visa. So that one is progress.