Sure man, but the vast majority of us do not work in the making beautiful sounds with violing business.

If some middle manager boss says to some minion to make a quick draft of a keynote of some random info that tangentially may make sense in one of his meetings, and the minion then goes on working on it on full attention for a day to make the beautifullest keynote of the word he did not do a draft and the boss is pissed because other shit did not get done. Having an llm quarter ass a keynote based on a prompt and two refinements is precisely the effort required for that job, any more than that is wasting time.

That assumes that there is no effective way to filter good from bad. But there is - both automated heuristics and manual training does this.

LLMs absolutely produce mediocre output in some ways, but it's not an inherent limitation caused by them "averaging" the internet. If that were the case there'd be a lot more typos, emojis and internet lingo by default. The fact that LLMs have these instantly recognisable stock ways of writing and stock phrases is a simple way of seeing that they don't simply produce "average" output in that very naive sense.