Suggestion as to how to get people to become healers.

[Taika]

You might need healer and tank DPS for minimum ilevel, which he even mentioned.

Not might, you will for most of actual raid content. Which is exactly why it's misleading to say "fights are tuned so that you don't need healer DPS to beat them". Because it's simply not true when they're first added to the game and the players don't have access to higher item levels. And world first groups being exceptional players is also exactly my point: when even they need healer DPS to beat that content, it's definitely required - and especially for average teams. And not DPSing as a healer in average group increases the DPS requirements from your DD and tank players more and more towards that world first level - which is unfair, when the healer gets to slack.