I don't see a lot of people still writing with quills, and there's a reason for that, yet there have been no catastrophic consequences, excepting maybe for "Big Quill".

Personally, I think this veers into hyperbole a bit. The degradation in motor skills is barely measurable when compared to common tasks required of people today and we're talking about a skill that has less and less use cases every day.

I believe this is trying to judge a fish by how well it climbs a tree, in a lot of regards.

YMMV.