Nah, SGE has instant heals with its Addersgall stacks so they don't lack completely in that department.

What would you define as barely healing, and what would you define as "not DPSing the entire time and healing" (ie the thing you do)? Like, are you dying to no heals often across many groups? If you're zooming from 100-40, it's a tank defensives issue. If your health gradually slips to 0, then it's a healer issue (at least usually). Healers as a norm do prefer to do damage and healing both.

Have you come back after a really long time?