Everyone’s rushing to implement/improve AI. AI needs a ton of data, Reddit/Twitter are good available sources. Reddit/Twitter would prefer to sell this data as opposed to having it gathered from under them by bots, for free.
I think that’s why Twitter and Reddit are rushing to restrict access (directly or through the API).
Youtube are just aggressively serving you ads, and limiting ways for you to circumvent ads. I think that’s just what they do as they have the market sewn up