I believe that there are players in any role that don't live up to certain expectation, healers are no exception. Nor does vague reference of "fairly common" perceptions means much, with all due respect. This has likely existed from some players for years, I could also point to the same for other roles, so what would you suggest that healers do? Just stay quiet because some players aren't perfect? Sounds rather hypocritical honestly when that bar is not set for other roles.