Doesn't sound to me like your being cranky. Sounds more like appropriate skepticism of the growing fad of insta Dommes declaring themselves "experts" in all that is BDSM.

I think that anyone who is sincere in "learning" anything new, especially something as consequential as BDSM, should want to be instructed, lectured, mentored etc. by someone with the knowledge that only years of subject matter experience can provide.

People who are looking for a titillating conversation might be less discerning in who they take instruction from, but they will walk away knowing so much less than had they sought out a teacher with the best credentials. Yep! That would be you.