He's only doing it because some people refuse to just do what they've been telling us all along to do, which is make a ruling. If people would actually do that and stop asking him about what is "right" (as though there is some perfect gods-eye-view of all these rules that combine together perfectly), he wouldn't have to keep answering.For an edition meant to be light on rules and heavy on DM judgement, Crawford has this horrible tendency to get technical on stupid things. I occasionally read Sage Advice to look for RAI, because knowing where they were coming from might actually impact my rulings. Sticking strictly to RAW in an edition littered with poor wording (possibly intentionally so) is the dumbest way to judge a game, IMNSHO.
And he keeps telling people to go re-read the PH in the hopes that they will actually do that and then interpret it for themselves, rather than just blindly get a yes and no answer and not ever think about it. Because once they get that, it'll just inspire them to continue to ask and ask and ask and never make a ruling of their own.
If people don't like what Jeremy says, then don't ask him or don't read him, and just do what you've been told to do and make your own decision.