Why? Why would this be something that upsets them?
Ah, ok:
Escape from Tarkov players are irate with developer Battlestate Games after it announced the release of a new edition, with a new mode and a $250 price tag, as they believe they should get it for free for purchasing the season pass.
Players who purchased the previous Edge of Darkness Edition were promised future DLC content as part of paying for the season pass. The community thinks the new Unheard Edition – which comes with a heavy price tag, what they believe is pay-to-win in-game content, and the new PvE mode – falls under DLC.