are you talking about TBC here? because in vanilla the only class that you might see only 1 of is Druid. and again, this is just in PvE, an incredibly narrow activity that isn’t the be all and end all of the game.
you, like every other soddy seem hyperfixated on raid logs from a third party website. your class as a whole just isn’t “viable” unless it competes with whatever other color class. go play it and help keep the dead servers afloat for the rest of your ilk