Let me clarify some things: * There is no money involved in the Pocket thing. * Pocket was added internally and not as an extension because it was easier. * You don't become a Pocket user simply by using Firefox, you need to actually use the feature. * Mozilla helped Pocket create a new privacy policy * If you don't use it, then it is not doing you any harm. If somehow the presence of a button annoys you, then you ca…
There's the problem you need to fix. It should be just as easy (easier, frankly) to build this as an add-on. I recently built a small extension[1] that targets Firefox, Chrome and Safari (with the same code-base) and found Firefox to be - by far - the most annoying to deal with. It's sad that the browser that championed add-ons is such a pain to develop for now.