Xur allows people to get exotics when RNGesus hates them. I recently got Mida in the Raid this week so I was sure he'd sell that this week but I'm sure that will come next time he sells a primary and I say I hope he does! It's just a game and if someone wants a specific weapon they should have the opportunity to get it and not have to hope RNGesus actually likes them enough to give them something good. Like I picked up Truth from this week's nightfall instead of the usual 9 materials, first week where I've actually gotten exotics from doing nightfalls. The Raid stuff will stay Raid RNG only and the exotic bounties will be only gotten from the bounties so those who need to be special snowflakes know what they need to do.