It's not like we have this gaping problem of WHM taking hate, but like, it does happen occasionally after a Lahar (seeing as Lahar also flatlines DPS for various reasons), capping -enmity in your curaga set is easy, so if I'm requiring DDs to have microimprovements in their sets, why should I not require the same of my primary support positions?
It may not matter today, it may not matter tomorrow, but when it does make a difference you're not
tl;dr We have near infinite access to "OK/acceptable" WHMs. We're recruiting WHMs who go above and beyond.