But none of that attitude surprises me, but I would challenge any academic (of that ilk) to walk into any workshop, and be safe.
You're missing the point.
The professor (and his peers) excluded you from the Workplace Health and Safety Committee, because you're not an academic.
And he had the temerity to say so, to the DWP Select Committee.
He and his peers would not know anything about your job, but think they can tell you how to do it.