Genji wasn’t the king of dps. He only became the king when dps heroes became garbage.
What’s the point of being the king if you’re the king of ashes? All dps heroes including genji, have mediocre at best pickrates. If you still can’t deal with genji, with all the ways we have to counter him, then you need to improve a lot more in this game.
There are three good reasons why Genji has is picked a lot
Players simply like to play him a lot. Even the devs said that there isn’t a really good explanation as to why he is so popular other than that.
He has double jump and wall climb which means that he has basically 0 bad maps so at no point is your team at a disadvantage just because of your pick by default. Even somebody like Reinhardt has bad maps due to their lack of mobility.
He used to be overpowered, but was nerfed appropriately to a point where he competes with the top DPS (Ashe, Hanzo, Widow, Tracer, McCree) but doesn’t really stand above them. Currently his pickrate is above them because Ana is a must have and Nanoblade is a really strong synergy. That’s why plenty of players have been suggesting that they remove the dash reset on ultimate activation so initiating the combo would be harder but it would be as deadly when you pull it off