I haven't read the chain, but as an update for the topic:
A few weeks a go in the news it was said the new regulation to enforce insurances is stuck, someone got an idea: "Rental companies can use under 25kg weight scooters", oh dear. This is exactly what we pointed out to government team working on this subject, but I was told "we trust companies operate ethically" .
The news told it can be changed with country specific regulation, no other info on local/EU-level progress.