Exactly.
And this is Tod, not a normal shroud run that can be healed by a bard - so it actually matters how good the 'healer' is at healing, as 1 second lag or 1 bad moment can turn the whole thing to a failed raid if you find out 'the healer' doesnt actually want to heal - and/or sucks at it.
Which makes the second point - if you have a fvs that refuses to heal others - people should know it so they can just bring a better melee instead - since the power of a fvs is the ability to melee well, and heal - refusing to heal means you are required to point out no fvs is going to melee as well as a 'real melee', and if they choose to give up half the class abilities because they are ignorant - well either be able to do both, or reroll.