Making Locks, rogues and shamans being able to tank and mages healing is not homogenization though.
Hunters can slow you.
Mages can slow you.
Locks have a ranged slow I think?
Whirlwind is just a basic damaging ability that does aoe damage, nothing special here.
Now this is homogenization.
You only named one ability that can fall under the definition of homogenization that you conveniently posted
The only homogenization I’m seeing here is the fact that druids are getting windfury and paladins getting like ability like tremor totem like shamans.