Nah, Ernie ist basically only mecha-rotic. He almost completely ignores advances from all the female teenagers falling all over him.
Since your objection is restricted to the leching and groping, I think we can completely agree to that. It is uncomfortable and off-putting. I only put the asterik on that statement, that we are watching a redemption story and if you haven't fallen down, you can't get up.
I guess I am more upset at the comment thread for the show in the general forum, because a lot of other people are way more puritan about it and the fantasy world in general, to the point where I think some of them have lived their teenage years in a convent. And, although apparently somewhat in jest, that one dudes comment that the MC of Redo of Healer is a more morally upstanding character than Rudy, which is fucking bonkers.