343 just shot themselves in the foot.
I don't know how much the rest of you know about Halo culture (I'm an expert), but run and gun is a huge part of it. It's not like it is in CoD where you can become successful by getting a killstreak. If you screw up the gameplay in Halo, you bring shame to yourself, and the only way to get rid of that shame is repentance.
What this means is the gaming public, after hearing about this, is not going to want to purchase Halo 5 for either their system, nor will they purchase any of 343's games. This is HUGE. You can laugh all you want, but 343 has alienated an entire market with this move.
343, publicly apologize and remove ADS and sprint from Halo 5 or you can kiss your business goodbye.