If you want to be pedantic about it, yeah go ahead and choose a single spell that is similar. That isn't the point, obviously. It's fine if two classes have an interrupt, for example, but when every class has an interrupt it loses a little bit of what makes that class separate from the others, and when you do it en masse, which they have, it homogenizes things. It starts with the smaller things, and it continues to creep over the years. That's just the state of the game in general. You simplify grouping, tagging enemies, traveling, etc, now you have a world that feels empty because no one is on the ground, no one is doing the same quests, no one is talking and grouping up for quests, etc.