I would say if it is all about the gameplay, like Serious Sam or Doom, then the story doesn't need to be that important and dexisions don't need to matter. But if the story is front and center, like Baldur's Gate and most similar RPGs, the story and how choices impact the story need to be well done so it doesn't feel on rails and replaying it is enjoyable.
Playing the matches is fun, since it is just Overwatch. Literally the same gameplay as Overwatch, but with 5 per team instead of 6.
In between is an assault of micro transaction manipulation bullshit that ruins the experience. PvE is hidden behind a paywall, except for the free stuff that is a retread of the seasonal PvE from Overwatch. I know this because I gave it some hours to see if it was as bad as people were saying.
People hate it because it was supposed to be an improvement but instead it was just another attempt to bleed the players dry. It might be the only game I have reviewed negatively on steam because the monetization really is that bad that it ruins the whole game.