Here’s the thing about Reaper or Moira or any other hero that is ‘strong’ at low ranks but fall off at high ranks. They fall into something that I like to think of as the Hero Trap.
Without getting into details of who counters Reaper (You’ll get plenty of that in this thread), instead, I want to focus on why playing Reaper is actually a bad thing even at low elos. As I said, he may be strong at low elos but he quickly falls off in the higher ranks because people learn how to easily deal with a Reaper. For every minute someone spends on a low-elo strong hero like Reaper that is a minute less that they could be using to learn positioning or tactics on a hero that will serve them better in the higher ranks. This kind of play is actually detrimental to the person as they begin to rely on the crutch of the relative power of that hero in low elos, where people don’t know how to deal with Reaper. Where they just let him waltz in like a Sunday Walk and start clicking people. In higher ranks, that same Reaper would never get anywhere near the enemy.
Moira also falls into this trap to a different degree. Her abilities allow her to play very poorly at lower elos and still get value. I can’t count the number of times I’ve seen my Moira playing in front of the Reinhardt while face sucking or throwing purple orbs then shifting back when she gets poked. Again, in higher elos she would be shut down very quickly for even thinking about doing something like that but because of the poor communication, mechanical skills, and awareness of people at lower elos she can get away with that. Moira is especially bad at falling prey to Hero Trap because it is deceptively easy to deal damage with her. Throw out a few purple orbs and voila, you’ve got gold damage, except by doing so you have actively harmed your team’s chances of winning. Poke damage without followup does nothing more than charge the enemy support ults faster. Moira is the QUEEN of poke damage with no followup. Sure, you may have gotten gold damage and beaten the DPS by 5k, but you might have been the reason your team lost the game because you allowed the enemy supports to get their ults to swing a critical fight in their favor.
There are more heroes that fall prey to the Hero Trap than just those two. Roadhog and Junkrat come to mind as well. This doesn’t mean that you should not play those heroes, because there IS a time to play them at the lower elos. Just don’t rely on them for wins because one day they will no longer serve you as well as they did. Unless you don’t care about climbing and will be perfectly content being locked to a rank because people above you know how to deal with said hero.
Now, why do I bring this all up? What does this have to do with Reaper being too strong in lower elos? I say all this because it doesn’t matter if the enemy team has a Reaper. It really doesn’t. If you focus on yourself, paying attention to your own positioning, pumping out as much damage/heals (dependent upon role) as possible, and learning how to play around a Reaper that your own team is ignoring, then you will improve your own awareness and game sense. This will enable you to subtly shift the balance of power in your games in your favor. Sure, you might not carry a team to victory but sometimes it just comes down to your supports simply playing smarter and living longer than the enemy supports to win. This will enable you to win more games and climb higher in the ranks despite the presence of said Reaper.
Getting Ranked in competitive is actually very easy. Focus on yourself, focus on your positioning, your awareness, your mechanical skill and let your team do whatever the heck your team is doing. Don’t stress about why you have a Bastion on attack. Don’t freak out over the Reinhardt that is charging into the entire enemy team and leaving your team completely exposed. It happens to everyone.
As long as you are focusing on yourself rather than what your team is doing, that means your team has a 5 out of 6 chance of being idiots, while the enemy team has a 6 out of 6 chance of being idiots. It might not get you to diamond in a day, it might take a couple of seasons, but worry more about yourself rather than what your team or the enemy team is or is not running.
Now, don’t get me wrong. I’m not saying Reaper couldn’t use some tweaks. Nor am I saying that you should just ignore the Reaper and not try to counter him or deal with him or anything like that. Everyone KNOWS Reaper and others are busted at lower elos. We’re aware. Blizzard is aware. But don’t fall into the trap of thinking that you’re losing ONLY because of the enemy Reaper. You are making plenty of mistakes yourself that are allowing the enemy team to win as well.
Worry about what you are doing, not the other eleven people you cannot possibly control.