They arent complaining. They are wondering about the quality of them, as was the case when EA did that and when Twitch did them. PC gamers are used to free promotion games, heck steam has one every month or so.Wow, so I posted that they're going to give away a game for free every 2 weeks in 2019. There have been 4 responses to that so far, all of them complaining. That's 24 games for $0.00, that you don't have to download or play, and still every response is complaining. Amazing.
Again, they are a promotion which is nice but maybe something similar to Humble Bundle game valt or Discords one with Nitro+ would be a better thing tbh (as you dont need to have to go there all the time to be dissapointed).
Those kind of promotions have been done a ton of times. They dont have that much succes.