I'm not suggesting critique without completion is invalid: I am suggesting critique without viewing is invalid.

Since BBSs and Usenet there has been plenty of commentary of ongoing series.

But the difference now seems to be people having an opinion, sharing that opinion... and then calling out that they haven't even watched the part of the show that is out.

Which boggles my mind.

I probably wouldn't opine publicly on Sidney Poitier or Katharine Hepburn as actors if I'd never seen anything they were in...