Well, you can also not play the game at all, resulting in weaker sales and stock numbers on their end, and instead play a game where the devs do in fact listen more readily to their community. Overwatch isn’t the only game in existence, and I believe the devs are aware that that is certainly an option to consider when feedback is ignored, especially recently.
And for the record voicing your opinion that a dev agrees with, is what I would call a success in helping them decide on what to do with the game. Tracer’s over the shoulder pose being changed due to backlash is just one example of them directly listening to the community. Hanzo’s anniversary skin having a facial hair change due to community feedback is another example. Factually, they most certainly will do as we the consumers say, if enough people call for it. Because the truth is - they cater to us, the players, and the customers. Not the other way around. 
No need, the example’s I’ve given proved my point thoroughly. But if you need more examples.
Seagull saying DF is too strong on twitch on his release. He gets nerfed on his first day of OW play.
https://clips.twitch.tv/TacitShortCockroachBlargNaut
https://www.forbes.com/sites/insertcoin/2017/07/08/overwatch-has-already-nerfed-doomfist-after-just-one-day-of-play/#3869ec746dd8
Here are Pros stating that Tracer need to be Nerfed. And by the way, this video was done in January 2018. Tracer’s first ever nerf happened in April. 3 months after. Coincidence? I have my doubts.
https://www.dbltap.com/posts/6037268-tracer-receives-first-nerf-in-history-on-overwatch-ptr
About pros saying that “snipers are fine” before the nerfs, that is also not accurate. When asked about the state of Overwatch, Muma brings up how the game has been the best it’s ever been but it’s not good enough. Specifying, the first thing he brings up that on what he thinks would make OW “objectively better” is “nerfing Widowmaker.” This was in June 2018.
https://clips.twitch.tv/FairHelplessKleePermaSmug
A month after his statement, can you guess what happened?
You are free to look this stuff up yourself, but I’ve paid a dreadful amount of attention with this pattern, as you can see. And it’s quite convenient that things like this continue to happen under the radar to be seen as “coincidence”. Care to provide an explanation?
If you think that pros had no say in Mercy being called “unfun to play against” and eventually reworked, then I’m going to have to humbly disagree with you there.
One can simply look back and realize that this is pretty much how all of this “hide and rez” stuff started and blew up to be such a big deal. Twitch streamers and pros have constantly harped on both Mercy and Ressurect. In fact, it was such a big deal, that even IGN covered it.
With regards to the misconception still happening on twitch streamers and in interviews, I made a thread talking about this specifically in my thread, MASS REZ MERCY | INTERVIEW, DICHOTOMY & THE FALSE NARRATIVE which discusses how it is still happening now. I would suggest giving it a read.
You… do realize that Blizzard owns OWL right? It is produced by Blizzard Entertainment. I am unsure as to what point you are trying to make.
Also I believe you are oversimplifying.
Blizzard = Owns OWL and writes their check.
OWL = Has Teams and writes their check.
Teams = Consists of Pros. Who recieve said check.
Whether it’s the Team owners who pass the players the check, or Blizzard themselves, isn’t relevant. The point is, they work for OWL, and by extension, for Blizzard. And thus, they effectively have elevated weight or access, via exclusive discussions with the devs (something an average gamer such as you nor I cannot have) and in their elite status allowing them to offer suggestions for changes directly. Of which far supersedes anyone on the outside making threads on a forum.
~Sincerely Yours xoxo,
a Lover of True, Fair, and Fun Balance.
xavvypls 