It's even more frustrating when you outright die because somebody runs into you during a spread AoE mechanic, but that's hardly a reason to remove all spread mechanics.
Making sure DPS can do their jobs comfortably is a big part of what the tank role in mmos is about. They've already been stripped of most of their personal impact and skill expression, there should be more reasons added to position properly in fights, not less. The entire point of trinity system is that every role has to perform in order for others to work right - you can't just remove anything that requires cooperation in a co-op game, just because "other people making mistakes is inconvenient to me". This shouldn't even be taken into consideration honestly.