You clearly don’t know how goats comp works. You see 3 tanks and 3 supports and are just thinking 3 healers healing 3 tanks.
This is completely wrong.
Despite goats comp having 3 supports it does not mean mass healing at all. They are supports, not healers. Lucio is used for speed boost. Zen is used for discord. Mercy for damage boost. Ana for anti heals and sleep dart. Brig is used as a tank / dps. Stunning players that get close, countering flankers. Pushing people out of position.
Moria doesn’t her used as she has no utility like the other supports. She only heals.
Pros don’t use supports and healers cause that would mean they are taking a lot of damage. And pros can team wipe in seconds. Which a helaer could never keep up with. So why bother? So instead, they pick supports that make the fight quicker. Not to actually heal them.
Also you’re using overall player base stats, so on average plat stats, and using those to try and justify hero’s in the pro league? Why not, look at the people actually playing the meta? Like Moria wasn’t even picked once. But of course she is plat where she’s good. It’s just silly to compare the two there.