Having just been to New York, the e-bikes there (very predominantly food/grocery delivery) are out of control. Too fast, no pedalling required - so essentially mopeds - but ridden like the most twat-ish of cyclists as in that first vid. Made me actually appreciate the limits on speed here.
https://www.youtube.com/watch?v=wM8Xli2KTzI
This seems relevant, again.
(as does latest):
https://www.youtube.com/watch?v=doSDfIo61r0