What does this have to do with Xbox lol? Loads of games have offered earlier access if you pay a premium or purchase a special edition. Timed exclusives are just that as well, if I pay a premium of owning another console, I get to play the game earlier than everyone else. The idea is that it's not of benefit to every title, some people who want this for Forza might not be interested in Halo for instance. It's an option.
It was annoying about two years ago but it's been normalised from online stores shipping earlier, VPN/regional access, premium editions, streamers and influencers with early access etc. The time to complain has been missed by a long time. It's just a little loyalty bonus for buying blind. Everyone who pays for a season pass, DLC is taking a risk. You have no idea what the content is like, how long it will be or the quality of it. Playground actually have a decent record though, as do companies like Guerilla so people might commit early to support the devs/game. As a loyalty bonus they give you a few days early access.
If the market exists, eventually it will be capitalised. It's how businesses work. There is a market for people getting the game slightly earlier than everyone else. And the thirst from gamers using various methods to get it earlier and 'break street date' feed it. It's just life.