I think those are both good points. Dockless hire objects, whether e-scooters, e-bikes or good ole p-bikes, do tend to get left in annoying random pavement-littering places. However, this can be reduced; Yo Bikes (dockless hire scheme in Bristol which has been surprisingly successful*) managed to greatly reduce this problem by specifying certain places the bikes had to be left in.
But more bike parking is needed regardless of hire schemes. If it is of a designed that can be used by scooters, kids' bikes, recumbents, trikes and tandems, and of course monowheels and so on, then all the better. When I rule the world** yes, we'll replace every fifth car parking space with such stands.
*In terms of getting people to use the things. I've no idea of and less interest in their finances.
**Or am Jacinda Ardern's deputy, obviously along with Mr Larrington and various other people.