Hussar
Legend
It's because they draw a false equivalence between 4E samey powers and 5E at will attacks.
Some players like doing the same thing over and over. Others don't. 4E PHB doesn't give you that choice AEDU is in everything. 5E is pick a different class.
If you don't like 4E powers you play a different game. Don't like a 5E fighter play a different class.
Blurg?
What is a paladin, ranger or barbarian doing that is radically different from a fighter?
See, this is where presentation matters. The difference between a paladin and a fighter in 4e is pretty significant. They are doing very different things every round. In 5e, the two classes, outside of smite, aren't doing anything different round to round.
In fact, if they both have the same fighting styles - they are almost assuredly doing the exact same thing round to round. Something I witnessed when my protection fighter and a protection paladin were in the same group.