An aggressive ticketing campaign isn't very helpful in a city with a lot of tourists, because they'll just go home without having paid the ticket. Is Interpol going to seek out 30 euros?
I have proposed this before in my city, ticket the e-scoter company for improper parking not the users.
Most of these business have gps trackers on them they will quickly find a way to enforce proper parking onto users.
We need to stop externalizing problems away from companies.
BINGO!
Haven't parked your scooter in the designated area? -10 Euros fee on your credit card.
Driving recklessly on the scooter? -30 Euros fee.
You'd think common sense would dictate not across sidewalks, but humans prove time and again that common sense isn't very common.
I'll definitely contend they're bad for the user. Now, to your point about being drunk, it could be due to the facet that in my city they seem to be primarily used for bar hopping, but my partner works in a hospital and has seen too many horrific injuries (and deaths) of scooter riders - like way more than bicyclists or even motorcycles (which he refers to as donor-cycles).
Border control does not (currently) detect fines and prevent people from leaving to non-EU locations.