He has a bad reputation for blowing up on Shirin. The reason he blew up on Shirin was because she went around camp telling everyone Will was hiding food he won. What really happen was that Will gave up the food he won to his tribe. Even though it's been reported that some girls on Season 30 actually did hide food.

Will is chilling seeing everyone read their loved one's letter that he missed out on and the annoying girl at camp is painting a target on his back accusing him of hiding his own reward so he snapped on her. This happened during the whole SJW movement and the fact that this sub liked Shirin from the beginning so people didn't want to be like "Wow she's annoying" and justified everything she did. I mean other castaways thought the edit played into Shirin being a victim more than what actually transpired. Also seeing how Shirin acts outside the game should show everyone her true character and how much she plays up being a victim. Her dispute with Max is the best example on that.

From the edit we see Will is playing the game the whole time jumping from side to side. He blew up on the girl everyone thought was annoying besides this Subreddit so he gets hated. Take that moment out and no one hates Will as much.

But seriously this Subreddit jumped on the Shirin wagon before the season started and refused to jump off or acknowledge how fucking annoying she is so they justified everything that happened to her as bullying. If Will pulled that shit without being prompted then ok he's a dick, but if you excuse a dude of hiding his own reward when he ended up sharing all of it you're going to get that kind of response out of someone.