I don't even use Adnauseam, but I find it a bit depressing that you don't see the flaw in that argument.

Let's leave ads aside and think of something else. Say businesses were dumping toxic chemicals into rivers, and activists were plugging those pipes. Would "I still need to make ends meet" be a valid excuse for those businesses?

Now, I'm sure you don't consider online advertising to be the same as dumping toxic chemicals. Like I said, I don't use the addon either. But for those who do, your argument is simply invalid. And the claim that they become the thing they hate makes no sense.