LW is surprisingly decent at identifying errors, and calling out obvious flights of fancy, probably even better then the HN average of 2023. Though the popular HN discussions in any given week usually cover a much wider spectrum.

I would say at least 1 in 5 posts that get more then 100 karma are solid enough to stand up to ~1 hour of careful scrutiny, even by a reasonably well informed amateur.

It's the EA forum where things are a bit looser.

We are the product of the cultures with which we choose to engage.

Some communities have positive signal. Others have negative signal.