Yeeeeah, definitely wait for and wait for and give this guy's review the diligent study it demands
Anyway the base campaign at Recommended or higher power (which he is) is tuned to be doable by players of all skill levels who just wish to experience the story, and is not a good representation of available challenge in Destiny. It's simply not intended to be hard. If you are more skilled you can complete campaign missions well below the recommended level for more of a challenge, or participate in endgame activities. Completing the story is basically the
start of a character's progression in D2. Considering how Borderlands structures its challenges I don't think what he is complaining here about would actually impact your enjoyment much.