I suppose there were warning signs, like every previous Internet technology eventually being used for advertising.
What the heck are you talking about? Anyone paying attention from 2000-2015 could have seen this coming and predicted it quite well, and in fact did predict this.
They are labeled Luddites by those with much better financing, much stronger connections, and huge amounts of profit to be made.
Said blowhard moving to using generative AI to come up with even crazier nonsense makes no difference. There is no logical reason for you, outside of whatever entertainment value you can find, to be listening to him in the first place and, even if only deep down, you know that.