Whether it was one person on alts or a bunch isn't the point. My last Hawken login according to steam is 1/23/2016. I stopped playing because every game I would join a hacker would pop up and gloat while using speed hacks/aim bot. I very rarely had the luxury of selecting a room due to my mmr. So I would often be put into the hackers room.
Maybe you got lucky and didn't encounter any, but I sure did. I hope the hackers got banned, but if it was one person on alts I'm sure they have no problem making more alts. The game needs to be patched.
Oh and as for speed hacks, those get caught by the AC. Anyone doing that gets booted from the server