Is anybody bothered that AI controls non-player combatants in DOTA2, Left 4 Dead, DayZ, Grand Theft Auto 5, Dark Souls, and every single bloody hoard mode? Where is it written that every multiplayer shooter must, with absolutely no concession made to the game design, support 100% player controlled characters and zero AI? That Titanfall should have a ton of players in every map calling in their personal Titans even if it plays like diarrhoea because the map size, design, and objectives don't support the player count but fuck it lets do it anyway.
It's a magnificent sort of confusing to call out Respawn for very specific, calculated game design in their own game, one an overwhelming majority of people here haven't played, based entirely on the premise that it's not designed exactly like a bunch of other shooters on the market, shooters it's specifically designed not to be like in the first place.
Ya'll basically looking at Call of Duty and Battlefield and going "BUT WHY BOTS", instead of looking at Titanfall and thinking "Bots must serve a purpose". They're designing a 6v6 player game supplemented with limited function bot fodder, all components working together to forge the core design.