I agree with everything that you've said and I find it a compelling reason why a user is within his or her rights to install ABP. But where it gets murkier is A

I agree with everything that you've said and I find it a compelling reason why a user is within his or her rights to install ABP. But where it gets murkier is ABP's pay-for-whitelisting business model. I can see reasonable arguments that this equates to extortion and shouldn't be allowed. As others have mentioned, extensions like uBlock Origin are better in this regard, which is better for both users and advertisers.