I do not know if they are evil, but I think it is fair for me to try to avoid those kind of people.
This is a fine stance to have, but I don't see how it relates to the context of ad-blockers. It's a simple enough just to not visit websites that display advertisements. Why would you need an adblocker for that?
Because there are websites with content other than advertisements I am interested in.
Now, I think Facebook, Google, other advertisers and content providers using these ad networks have made the (moral) rules of the game quite clear. They try to extract as much net value from every transaction with me as is even remotely legally and technically possible. And they make massive investments on the technology that is trying to maximize this value extraction. Why should I feel bad playing by the same rules they have created?
(Note that in practice I am not as ideological as my arguments here are. I have e.g. chosen to disable the adblocker for some websites instead of paying for subscription to support them somehow. Reason for this is the fact that it is much easier to turn off the adblocker than hassle with payments.)
This is a fine stance to have, but I don't see how it relates to the context of ad-blockers. It's a simple enough just to not visit websites that display advertisements. Why would you need an adblocker for that?