This article is always thrown around if the topic comes up, at least in my experience it's wrong or at least not useful for my usecases (general purpose web hosting stuff in all kinds of flavours)

- swap on spinning rust outright kills the system if memory is low. it's a full blown crash.

- swap on ssd act's much the same

- zram swap stalls and slows down the system for several minutes

I just raise vm.min_free_kbytes to make the oom killer faster and disable swap. At least the machines don't crash hard this way.