Ha. Ha. Let's all have a laugh.. I don't have one but it varies between jeans and high vis council type jacket in winter and shorts and aldi jersey in summer. My wife says I sm an embarrassment but I just don't care!
I know you've said its not about the speed, but I think I can give you a few examples that I think might help.
Its not about the speed you're going, its about the speed the drivers expect you to be going, and how much room / time to give you.
Your riding a "normal" looking bike, in normal.. .ie not sports / performance clothing. So people will give you a glance and make a perception of the speed you're travelling at based on your age, the fact its a bicycle and your dress.
If you were dressed in full Lycra they'd probably have a more accurate guess of what you're likely to do speed wise, based on the fact you're on an eBike.
I commuted in an out of Manchester for 10 years, when I dressed casually I had more problems because people simply didn't expect me to be going as fast as I was.
Same is true for my Dad, he's 70 now, but can rides 100 - 200 miles a week on his road bike. He goes a lot faster then people expect, but because he dresses like a performance cyclist, he never has any problems with traffic.
I suspect if he road in jeans and looked like a 70 year old, he'd have people misjudging his speed and the gaps they should allow him all the time.