Your response would be great in a competitive game. But not in a co-operative setup like the DF---although many seem to have the need to show who's got the bigger body part in everything they do. As I said before, you are not solving the problem. You are not helping at all by discouraging people, telling them quit tanking.
The problem is real and is a fact: we need more tanks in the DF. And when you brush off people who are trying to learn tanking by applying the utmost highest standard on them right from the beginning, you are raising the barrier to entry.
You cannot expect a fresh rookie in boot camp to function properly under live fire. That's why some armies used to send rookies crawling through a field with live machine-gun fire scissoring across over their heads over a 500m crawl. In the army we could do that can call it a day. In a co-operative game, we need to actually support them.
Or if you don't feel the problem of lack of tanks, then you probably shouldn't be trying to stop others from providing the support.
Don't add to the problem. If you are just going to make the problem worse, you might as well not say anything.
EverQuest was a different game, in a different time. Or maybe you'd like to revive slavery as well?