If you lower the barriers to producing large volumes of garbage text it follows that you'll get more of it — who wants to read any of it, I don't know. AI generated text isn't interesting to read, the video isn't interesting to watch and the music is painfully boring.
Google search is terrible because Google's stopped caring about search quality in favor of monetization. It doesn't mean an LLM can outperform a traditional search engine that cares about said quality.
It's not scraping, it's indexing and linking out to creators. LLMs are helping themselves to everything with no regard for content creators. They should be subject to copyright claims — I don't care if it destroys their business, they should've considered that at the outset. They didn't then and they don't care to now, they're simply greedy and looking to build something that benefits themselves and their investors with no regard for anyone they step on to do so.