See this I have a problem with. Competitive halo IS halo. There were a few great posts in the last OT, about how what was quintessentially Halo for the better part of a decade is now relegated to niche status.
Sprint, Armor Abilities, perks, loadouts, weapon unlocks, personal ordnance, Global Ordnance, these didn't exist in Halo 1-3, widely considered the definitive Halo games.
People like Ninja, Bravo, Sudd twins, or whoever plays competitively are not the ones who say sprint doesn't work, but ordinary fans of the series for the better part of a decade.
All this competitive, pro, hardcore, and other loaded terms just change the discussion. Sprint has negatively impacted the core Halo gameplay experience. Full stop.
I don't want to play competitive all the time, sometimes I like to screw around in social games, custom games, I don't like sprint in those either.
Any defense of sprint as a valuable addition to Halo, can therefore be attributed to any other changes as well, for some people camo is a great addition to Halo, but not competitive halo.