it is allowed to do group content with friends. we are just not joining any roulettes with randoms generally.
does it surprise you that people that play healers have friends that we can group with? of course it does
there are, as someone has said, trusts we can use. while it may not be as "fast and efficient" as you like, healers are rather used to that due to the gameplay of healers.
nice try but not good enough.