They aren't, but I live in a hot, humid climate where it often rains. So a scooter is not the best there. And then my workplace is right on a highway - I can take lower-speed roads to get there, but even the slowest path involves 35 MPH roads (~55 km/h), and it's longer.

Goretex...

Yeah, it’s great, but what does that have to do with my comment?

To be worn, when it rains. Even when not. There are shoes, socks, trousers, shirts, shorts, slips, sweaters, jackets, even suits made out of that, or functionally equivalent stuff. Another option would be something very light to pull over, which you carry with you at all times, crumpled or folded into a volume of maybe two matchboxes, single- or multi-use. Much cheaper than than the goretchy parts, btw.

Need faster e-scooter!

45 MPH is not the slowest ever, and actually the issue is that I was in the bike lane attempting to pass a truck and then they suddenly turned without using their signal or checking their mirror.

So actually the lesson apparently was don't attempt to pass vehicles on a scooter, more speed is bad.

Then wear a helmet, with a bright flashing blue light on top :)