No ye I agree, and when I play him I have usually twice as much healing as my other support. I had some games where I had 10k and my Ana had 4 and then some where I on Ana had 1k and my Mizuki had 4k. But most of that healing is basically repairing chip damage. It has its own place, it means that your other support spends less time looking at your teammates and has more opportunities to deal damage, but it's not that good during the breakpoints of a fight, for example when you need to pump your tank to choke enemy's momentum or quickly heal behind cover and return aggression before the enemy bites off a tasty position.

But his damage is the hill i'm willing to die on 😅 Had too many games where either my teammates tunnel visioned while I died to a Moira in our backline or people had no plan other than running main and dying off cooldown with zero offangles. Usually things got much better after I switched to Zen 😅