This is a very bad precedent. I'm hearing impaired and I would never think of demanding this when I'm getting these things for free. Perhaps, I would not be saying this if I were paying for it - still, I may consider the other party when it comes to this.

Using the law as a weapon to demand something where we have alternatives[slides, notes or manuals] is, in my opinion, like "biting the hand that offers help".

That said, I have been seriously putting in effort to listen to videos without captioning. Yes, it's an uphill task and I'm willing to do it.