Well, paeon and ballad are crutches in most situations. A good party only needs foe (T8 excluded). That's the problem with labeling bard as support. Aside from foe, it's only support when somebody screws up. Which means if nobody screws up then no support is needed. Bard is a back up support for when things get sticky. If a healer continually needs ballad then either they're bad or other people are bad. Playing ballad frequently is encouraging/enabling people to continue being bad.

And of course there are exceptions for extreme scenarios like single healing content meant for two. But I'm talking about general encounters.