Yeah, you don't really know what you're talking about.
The MCSG devs are fine as far as I can tell, but some glitches are difficult to locate and far less simple than they appear.
On top of that, anticheats are immensely complicated. It took one of the best coders in all of Minecraft to make a decent one, and even with the immense resources that Hypixel and Mineplex have, both servers are hacker infested.
This isn't to say that MCSG's anticheat situation is acceptable, just that it's not as easy as you seem to think it is.
And quantity is important, on top of quality. Badlion's dev team, at one point tiny, has grown to 10 people. Look here:
https://i.gyazo.com/4b4352a40198067a902160ed7c485f79.png
A large dev team can tackle a broader range of issues and is better equipped to deal with the small stuff like glitches.