I mean, as someone who has never, ever tanked before in a game before the Paladin I got to 50 today, I'd just like to say the OP really missed out, lol. PLD's story has obviously more effort in there (at least from 30-50), nothing at all felt to be there in GLD TBH. Not to say they're literature award-winning ones, OFC.
And, I mean sure, people on the forums find DF easy. But given my own experience of lower leveling dungeons, there has been a wealth of Scholars spamming Physick, not using Aetherflow, no use of faerie CDs, and precast Adlos that snatch aggro at the start of pulls towards the healer. My health bounces from topped off for multiple minutes all down to less than half most of the time. I'm able to not be a total sponge and am able to account for the gaps in skill of healers mostly because of being a PLD with Sheltron and some measure of damage.
It's "legal", yes. Is it fun for anyone else but the GLD expecting everyone else to do better and above for them, no. You should try tanking Bardam's Mettle without your job stone and see how that fares, lol. /shrug