That’s the thing. “Roles” tend to make a lot more sense if you look at them as “Heavies”.
They’ve pretty much given up the MOBA/RPG concepts for Tanks in favor of “Tanks that come from Class Based Shooters where they are called Heavies”.
Similarly, you’d think it would make sense if “Supports” were more in line with how lethal Supports are in “Class Based Shooters”. And deliberately ignore the MOBA/RPG definitions of Supports.