[qw]

Even though the characters are mostly the same for most European languages, the mobile keyboard is often tightly connected to spell checking and auto correct for a specific language. It can be a struggle to "fight" the autocorrect when using the wrong keyboard.

Physical keyboards don't have the same issues.

[soco]

I never found autocorrect reliable - at least in Android keyboards (both Gboard and Samsung) - so I learned to always keep that deactivated. Swiping is the only place where keyboard layout would matter to me, so indeed virtual keyboards make sense to match the input. Physical don't have swiping (yet?) so I'll stick with the one with umlauts and never bother to change the input keyboard - although Windows keeps insisting after updates.