Am I bad for actually "tanking"?

[Atoli]

I stuck with Paladin in ffxiv exactly because I prefer to tank.

You tank by taking less DMG than other classes and keeping hate on you.
VIT does not help with either of these 2 things. STR on the other hand helps keeping hate and does not negatively affect your defense.
All you have with more VIT is a larger HP pool, which is not required for any content in the game because all attacks are either weak enough to be healed just fine without having 20-30k HP, or so strong that they kill you instantly anyway unless you pop HG/LD/etc. no matter how much HP you have.
If VIT also affected defense it would be different, but it doesn't. So implying that tanks who focus on STR are actually "not tanking" is not just rude, it's also false because their stats are actually more tank-y than a pure VIT build

As a healer, tanks with excessive HP are a pain to heal and as a DPS I pull hate off them all the time. While I would like SE to adress this and make VIT matter as a tank stat again, that is not how it currently is. Currently stacking VIT makes it harder for you to be a good tank.

[WolfKid]

Currently stacking VIT makes it harder for you to be a good tank.

Yeah, i was kinda forced to go STR build, what with DPS getting more powerful and WARs ripping hate off of you