The problem is they don't only get people with their cargo bikes trying to do the right thing, they will also be getting dickheads with unregulated imports that go >50km/h and have subpar electrical design. If there were import controls and regulation on electric bicycles to ensure that people don't have access to dangerously fast house-fire machines there would be more shops willing to work on them.

Anecdote != Evidence but, I work with a guy who bought his kid an insanely fast electric motorcycle that is technically an electric bicycle because it has tiny cranks. He's asked me several times if I would do work on the bike and I always say no, it's a deathtrap for the rider and a hazard to motorists and cyclists.

These kind of products should never make it into Canada and the people who sell and ride them should be fined. They are full blown vehicles intended for use on roads (example): https://www.alibaba.com/product-detail/2023-New-EEC-Model-15000W-Powerful_1600988110312.html