This may be true in some cases, but you'd have to answer why Twitter is a cesspool for the vast majority of people, and why it needs to be carefully curated in the first place.

It seems clear to me; the vast majority of human conversation is gossip that is "garbage" except to the small group who cares about it. Twitter amplifies that to the max.

Every social media site that allows connection to an essentially infinite number of people will demand curation.

Same reason most television is a cesspool: low-budget, over-the-top drama is cheap to produce and appeals to the lowest common denominator. If you want to watch good tv, you have to go find The Wire, and if you want to read good twitter, you have to do the same.

I don't use Twitter, I don't have an account, but sometimes (news) articles link to tweets. And when I click on them and see the replies I have to actively remind myself that it is not an accurate representation of the population.

As Hannah Arendt wrote in her notebook "Amor mundi - warum ist es so schwer, die Welt zu lieben?"