You’re correct that those two modules do something that’s not normally possible. As such they’re notoriously dangerous to use these days on certain servers. But with that being said they don’t use any exploits, they don’t attempt to trick the server into allowing for certain behavior. Something like speed is easily blocked and detected, so you have to deliberately move in such a way to get around how a particular anticheat specifically detects that you’re moving faster than you should. That’s an exploit, but reach doesn’t do anything like that, it’s passive, it simply extends your attack distance. It makes no attempt to “bypass”. Even still measuring reach is difficult because it’s between two player’s inputs. Measuring a single player’s movement is direct and accurate, which is why you have to frequently manually exploit how the server blocks or doesn’t block something like that. That’s requires maintenance, which there is exponentially more of as a sever is more incentivized to patch when the user base is larger.Tbf, don’t some modules like reach and velocity already do things that aren’t possible in vanilla Minecraft? Sure, blatant modules are more obvious and easier to detect, but some ghost modules are “exploits”. Btw, the reason I was confused about definitions was your use of the word exploit. I consider an exploit to be something that makes the anticheat not detect something it normally would under a different circumstance, while I consider a bypass something that will not flag the anticheat no matter what because it is not capable of detecting it without an update to its checks
So we’re not doing that, you can go try and do that with any blatant client since they have <5% of the users and nobody cares to patch it until at least a few days go by. We’re not interested, we don’t care.