They're already available in Brussels and Berlin and have been aound in Lisbon at least since since March.
And as you can just lock them anywhere (the lock just need to be put in place, no need to lock it to anything), lots of them are just left on sidewalks.
Not as bad as all those fucking e-scooters laying all over the place, but that may be just because there are less bikes than scooter (for now...)