As far as (1) goes, 90% of the content on Lemmy is just a Lemmy circlejerk, the remaining 10% is memes. What influx of "low effort content" could possibly make the discussions on Lemmy worse than they already are?

As far as (2) goes, you realize your data on Lemmy is open to everyone to scrape, not just Meta? Every single one of your upvotes is public.