Why do people avoid it on PLD

just straight tank him its not difficult and stops him moving position.

as mentioned before

save all your damage negating skills for his 100 tonne swing and the rest is gravy

Ok so your whms need to work a little harder but still its much much safer to do it this way.

I can guarantee I will not die to CC if the party watches for animal instinct and acts accordingly.

Also

In the new faction leve content straight tanking allows a party of 6 monks 1 whm and me (PLD) to take down two reasonably similar CCs in 10 minutes.

In conclusion dont run just tank as PLD.