Change DPS forever, this cannot continue.

[Alexandre_Noireau]

One of them is a vehicle?

In fact opposite to the popular opinion, tanks are quite vulnerable.

so why can DPS not also refer to the role?

Because it is not a role.
And what people calls whatever here doesn't matter at all - A million, a billion, a trillion people can be wrong, like in the case of this game, and truth still will stand above them all: I am only it's messenger.

[Mikey_R]

Because it is not a role.

Says who?

In fact opposite to the popular opinion, tanks are quite vulnerable.

Lets rename tanks then to better reflect the role they are trying to represent.

[Alexandre_Noireau]

Says who?

Reason, logic and proper use of language.

Are you gonna ask people start calling their characters TOONS too?

There is no reason to.
But on the contrary of DPS, calling a character toon isn't wrong.

As is wrong to call a role DPS instead of Damage Dealer.