Note what other people in this thread are saying.

Sorry, but being a developer I can tell when players are just repeating half-truths they read online.

There’s no reason why strategies that work in any other kind of computer science shouldn’t work in gaming.

In fact, it sounds like you think a ‘ban’ is something bad to these players or will stop them. If it did, I’d probably be enjoying Rust still.

The difference between an attack costing $0.00 and $$0.01 is enough to reduce attack volume by orders of magnitude.

Even just costing the attacker 30 seconds is enough to have a massive effect, which is why captchas exist.

Game keys tend to be in the $1 - $5 range, which makes bans an extremely useful tool.