> Moderator responded that they couldn't find them qualified enough to take part in the discussion.

With a gate keeping attitude like that, are you really surprised engineers don’t want to participate?

The problem as stated isn't finding interested engineers, but qualified ones. Reframing it as just about appeal is disingenuous.

Why would an anyone need prequalification to walk into a room and sit in an audience while lawyers talk about stuff on stage? Just let them in.

There is no such thing as “qualified”. The engineers actually doing the work definitely get a seat at the table, otherwise it’s an academic circle jerk detached from reality.