For me I think ebikes have two sides, in the UK the ones that are speed limited are a great way to get more people cycling, they are just bikes really with a bit of motor assistance, and I've no problem with them at all, even when they breeze past me.
It is quite funny though I can always catch them again down hill I guess it's confidence or gravity one of the two 🤣
The other side though are the ebikes that really are e-motorbikes, but always get labelled ebikes. They're unrestricted on speed, technically illegal to ride on roads in the UK and their riders whilst also lacking basic road sense don't seem to appreciate the speed disparity they have which inevitably means when they crash they'll be seriously hurt.
And those I don't like, especially the ones ive encoutered travelling near motor vehicle speeds on cycle paths or, on roads, and those worry me more because those are the ones the politicians with axes to grind with cycling, label as out of control cyclists and are more likely to bring in legislation that impacts all cyclists simply because the authorities will argue its hard for them to check rules about motor power and so on and why can't they just blanket frame a rule instead.