It is not accurate. A very small number of actors pose as many and make up the majority of traffic. For example, your User-Agent block may cut traffic by 10%, 9

It is not accurate. A very small number of actors pose as many and make up the majority of traffic. For example, your User-Agent block may cut traffic by 10%, 99% of which malicious - but you blocked 1000 individuals, only 1 of which malicious.