I don't understand why some posters feel the need to insult others or try to psychoanalyze them.
If you want to ride an e-bike, that's fine with me and I don't give a crap if you pass me, either.
Until you become dangerous to me I will say "Hi" and that will be the end of it.

Yesterday I was passed by a group of about 10 young guys on e-bike mountain bikes when they had to use a bit of road to get to the next trail section. They all said hello and so did I. We did not feel superior to each other or object to each other.