So when nearly everyone who was able to play it enjoyed it, even people who didn't care before...you still have doubts. OK...whatever. There are people who are buying a ps4(because there is a bundle) just for this game.
The game is fine...I liked the alpha test more than any halo game in the past and no...it is not halo...it isn't close to halo.
Halo didn't have an online connected world, loot, skills to upgrade, classes to pick, weapon upgrades, armor upgrades, and halo never had the ability to aim down the sights.
So yeah it is "close enough to halo" only to people who don't pay attention and think any game that bungie makes that has a sci fi theme and is an fps is a halo clone. By that logic then Halo was a copy of Marathon which was a sci fi fps game from bungie. That game just happened to be the first fps ever to feature true mouse aim. Bungie is fine, Destiny is excellent, the game will sell well and you sound like are just mad because bungie doesn't work for MS and Halo 4 was the worst halo game released because bungie didn't make it.
Keep in hating if it makes you feel cool.