It’s about as real as trickle down economics.
Actually, people don’t play much Tracer, Genji, Winston, Zen, McCree at mid-low ranks.
Players at these ranks use whatever works for them.
That means we see a ton of Reinhardts, Reapers, Moiras, Symmetras, Torbjorns, Bastions instead.
Heroes OWL and pro players just aren’t using. Because “they’re trash”, “broken”, “suck”, “imbalanced” etc.
It’s always been this way, always will be. Stop panicking about Sombra or whoever else has been buffed suddenly taking over because ‘pro players’ use them. It’s not how it works. It hasn’t exactly helped Ana, now has it?