Of course you should be able to make a little bit of return from an OS that you build, however privacy badger isn't a adblocker by design, more it only blocks tracking domains, some of which are ads
I can see Spatry's point on this though, because it can be used as an ad blocker, it really doesn't help with what little he generates from ADs. If me, wouldn't personally want that to be cut off and if anyone that uses Privacy Badger figured this out, then Spatry would essentially be stomping on his own foot if he added this. I will have to admit that it is a nice little extension and does more than just block ads, but at the same time it still blocks ads. Anyone familiar with ad blockers can whitelist the site, but including something like that by default doesn't seem to favor his setup though.
Glad you mentioned it though. Still working on learning more about the extension, however seems pretty handy.