Welcome and all!
Real hacking in GMS has been around since beta... 2 years ago you couldn't use CE's anymore. Then they moved on to UCE's, then .DLL injections. My guess is you only witnessed the .DLL injection hacks. Not things such as pervac where you could vac off-map all the monsters on the map, so nobody could see you, and at the same time you item vac to loot all the items. Now those were the good ol' days.
I suggest being anything else than a DB because there is an overload of them...