Certainly one of the better classes I know of on this subject.
Rabbi Yankelewitz doesn’t prove his various assertions, however. To go beyond anecdotes, you need to refer to his sefer (not exhaustive, either, but let’s see our opponents go and set up a counter-argument that doesn’t distort or ignore the sources!) Rabbi Yankelewitz presented the Ra’aviya argument before, but this was clearer to me.
I think this should be enough to at least evoke serious curiosity in anyone searching for the truth.
In fact, here’s a “haskama”: I continually send a Techeiles-agnostic friend to various online shiurim, many of which he listens to and enjoys. Of course, not enough to actually do anything, but he does “enjoy” and certainly comments on them. Not this one. Oh no, this one he hated (not that he had the slightest thing to say against it!).
Well, I think I know why…