Please show us some example of onion websites that are using HTTPS instead of HTTP.
Most onion websites I know are using HTTP.
Mempool.space has http, OrangeFren and Trocador is using http, Mullvad VPN is using http, and I can give many more examples.
I've also a ticket from mid June, still unanswered. I tried to contact OrangeFren (as he's often in contact with eXch), and he told me that he does not have heard from the team either unfortunately. Apparently a batch of tickets was solved recently, so I guess it is only a matter of time for ours.
I am sure they have very small support team, and they grow a lot during last year, maybe it's time for them to hire more people as support help.