Healers that don't want to DPS are like DPSes who refuse to move out of AoEs.

[Enyalios]

This is just how my team works but for us if there's a pause in healing i usually focus on calling out mechanics and reminding people of the next steps so there's no tunnel vision (*We used to have the mechanics TS bot but the owner left the static*)
Healers aren't the role of front line and they stay at the back with ranged classes (typically anyway) so yes, their game has a slower pace.

I do get why people think that healers should dps in their free time simply because the skills to do so are given to them but that doesn't mean its a solid enough reason to dismiss people who "heal only".

Are you unable to call mechanics while like... pressing buttons?