The fact Ban evading can be exhausting after while is what stops hackers. Graal security is getting more and more complex. The number of hackers that move from place to place getting ip banned is very small. Removing ip banns will just let script kiddies ruin things. Plus I like a challenge. What is your alternative to ip banns then?
Also
There are 4.3 billion ipv4 addresses.. Not to mention we have ipv6 now, the graal community isn't that big dude. Lol