Looks like IW knows about it and is working on a fix
"It's a new thing bad kids are doing, IW are aware and it'll be patched soon."
That's IW, we're stuck with Treyarch who doesn't not have a good track record.
The ONLY time they gave support to game after it was officially 'dropped' was MW3 when people with softmodded Wiis could literally hijack your account and just destroy everything. They did a hotfix where if you tried to activate the code to do it, your MAC address would be auto banned. Which stopped the script kiddies from doing anything. It was still a smart idea to keep a back up because people with hard moded wii could still do it.
And you got screw loose since at least IW makes an effort to deal with the pervasive elements in CoD like Quick scoping. This was probably the last patch we're getting so we get jack support to boot.
The lack of patches has nothing to do with Treyarch genius. IW are the ones who tell 3arch to patch the game or not because after all it is still their game and 3arch just helps with the porting.
Treyarch was the first company to actually take care of their game anyway in BO1 after the tragedies IW faced with MW2.
IW dealing with quickscoping? Lol NEXT JOKE!
It still pretty easy to quickscope. Just because the mechanics are changed doesn't mean it's fixed. Unlike how Treyarch actually fixed it in BO1 where it took a good amount of skill to have a chance at CQB against SMGs and ARs...but then all the FaZeFanboys cried about it.......and it hasn't been properly fixed since then.
It might be a variation of the infinite tactical glitch. I saw a guy spamming semtex yesterday like you wouldn't believe. It was made even worse by the fact that he could actually aim so he'd stick you before you could even get in range