That's not even typical for bad tank behavior. The typical douche finder tank usually plays in a way that makes things difficult for others and doesn't give two shits about it. For example: a recent PUG WAR I had in Pharos Sirius HM would Tomahawk each individual mob in the pack instead of using Overpower, and it was causing him to lose hate to anyone who would start attacking prior to him grabbing all the enemies. When called out, he said Overpower sucks because it's a cone and told us to hold off on attacking until he has full agro. Freakin /facepalm man.

Your tank is a special kind of douche because a tank who calls out a healer for healing them is a unique brand of stupid. Either way, DF is always a roll of the dice and it isn't surprising when a tank main is taken aback a bit when they role as something different and notice just how shitty DF tanks can be.