Skill in holding enmity alone has never been a thing in XIV ever since 2.0. It became even -more- trivial with the addition of Shirk in 4.0.

Heck, it was proven with certain skill combinations that tank stances could be bypassed altogether! An example would be 4.0 DRK where all you had to do was 1-2->Dark Arts -> Power Slash and you established enmity for most if not all the fight. This was done without Grit on by the way. What is the point in stance dancing when you switch a total of 1 time in a fight? There is none. It makes the tank stance button a dead one (Hello, button bloat!). It also makes people believe there is skill in such a thing when there really wasn't. The only skill part about it was the burden of knowledge knowing such a thing was possible.