Depends on what exactly the opinion is, but generally I'd say yes. If it's about their looks, maybe not.. but even then understanding the basics that determine things like not needing air intake, exhaust, the placement of batteries, etc. can be helpful.

If it's about the supply chain, understanding at least the requirements for magnets is helpful.

On way to make sure you understand all of these things is to understand the electric motor. But you could learn the separate pieces of knowledge on the fly too.

The more you understand the fundamentals of what you're talking about, the more likely you are to have genuine insight because you can connect more aspects of the problem and understand more of the "why".

TL;DR it depends, but it almost always helps.