This is a fair point, but in the present context, it seems like the claim is that nextdoor.com is _only_ amplifying bad traits.

At the very least, it seems like the present claim implies that bad traits are eclipsing the good ones. The reason I think this matters is because tech evangelism has a worrying tenancy to write problems off as existing prior to the technology, without honestly evaluating whether or not the technology is responsible exacerbating the problem.