I find a little nugget of hypocrisy in these sorts of conversations rather sad.
A game removing something actually sexual, people complain that it'll reach a prudish level in the future; "Stop complaining, its a slippery slope fallacy, complain when they do that, until then they're just removing something actively offensive".
A game removes something not remotely sexual, except to the lives-in-my-room sort who think any girl looking attractive is "Sexual": "Its the game dev's rights, I mean who cares, why are you complaining".
Why the complaints? Because its reached a level people see as ridiculous. It has slid down the slope from removing actually offensive and sexual content, to potentially offensive and potentially sexual content, to non-offensive, non-sexual content.
And honestly the whole reason anyone has an issue with this pose: The woman who is performing it is attractive. The guys do it, too, but because their clothing isn't the same style as the leggings or tights Tracer wears - and to anyone who says that's sexualised, look at how many women IRL wear similar clothes, vs how many wear baggy tracksuit pants. Are they all being sexual? - and they aren't as conventionally attractive, its not counted as sexual.
The pose isn't sexual. Its a standard, generic victory pose, on an attractive girl. We are getting to the point of saying being attractive is being sexual, and that's a message that I feel is harmful to send. Others draw a similar line, and that's why its being complained about. Because we've found the line of reasonable changes, and we're crossing it. You don't need to hide attractive people just because they're attractive. That's body shaming in and of itself. It informs the gaming community that this is a level of being afraid of criticism for being 'sexual' that is not required, and beyond the tastes of their market. Its an attempt to show companies in the future that such things are not something to be ashamed of, and in the future maybe these changes to something we like won't occur. It sets a level that the community widely agrees is acceptable of this sort of content, and that further 'censorship' of ideas up to this point does not need to occur - and yes, this is a widely held community belief. The arguments against those who complain aren't "OMG its too sexual", its "Blizzard can do what they want" - ironically the same argument used against 'censorship' previously, funny how its an acceptable argument when the shoe is on the other foot.
Put simply, a lot of people want to make a statement that this is the line of reason. You don't need to change more than this, and this is a level the market both accepts and wants. And regardless of anything else, its valuable insight for game developers as to narrowing down what the opinions on the issue of 'sexualisation' held by the wider community actually are.
And hey, its a handful of threads and people making a complaint about something they think is silly. Its not like its really taken over the internet in a bad way. If you're not a fan of people voicing their opinion, other active threads do still exist, and ironically its entirely up to Blizzard with what they do and whether they listen to this feedback or not - if they react to the feedback and include similar things in the future, its entirely their choice. Its just making the community's opinion on the matter known, and the same goes for those who support the removal. Its a conversation that has a right to be had, even if its not something you see as reasonable.