> They could use the same infrastructure as bikes lol.

Well no. If it's status quo rather than disability and elderly only then you're just making the bike paths uninhabitable by children, new riders, etc.

> Or are you implying bikes don't need parking lots and roads?

It's a matter of density. A 4m wide train line can take 80,000 people an hour. A 4m wide bike lane can move 10,000-20,000 people an hour. A car park sized spot can fit 40 bicycles vs 10 mopeds or 3 of these. A folding bike can fit under your desk, as can an escooter. Doubling or tripling your capacity and reducing danger with LEVs is appropriate for some areas, but there are no silver bullets.

You need local streets heavily biased towards smaller vehicles and transit and active transport pathways safe enough that you see a 60 year old grandma biking to the shops next to their 3 yo grandkid.