With great power comes great responsibility.
I see the issue coming to a head with so-called multi-use trails. I think this is the heart of the OP’s beef.
Multi-use trails are only multi-use for the fastest vehicles, so are very much a misnomer for me.
For example I would never ride my pedal bike on a trail that is used heavily by ATV’s and motorcycles. The smell, noise, and dust are very off-putting. By the same token I will ride my mountain bike on trails that allow hiking. The hikers (I am one as well) find mountain bikes problematic as their speeds do not make for a peaceful walk through the woods.
I don’t own an e-bike, but am interested in a diy conversion of an existing bike as way to test the waters on local gravel and paved roads.
I am fortunate to live in a rural area where the drivers are courteous and friendly. My around-the-block ride is 32 miles and I’ll typically see a dozen vehicles. 95% of passing vehicles move totally over in the other lane. I wave hi to everyone, 95% wave back.