More buttons doesn't means more skill, look at AoE/Single Target variants. What's the decision behind "should I press X or Y?", the answer is always obvious if you know math and how the games works.
But more button can also means more execution skill. Compare MCH wildfire from HW/SB to Wildfire from ShB.
As far as I know, raiding in WoW is a gear check, not mechanic+dps check. Crusade classic was cleared a few days after release.
No matter if you press 1 at the same speed, players will have different outcomes based on their gear. Gear is easy to access in XIV.
People who find the button number tedious just don't have any button management skill.
It's up to them to better manage their hotbar, not to the others to reduce their fun.
Believe me if you were to spam 1, you would first be relieved but then bored really, really hard.
