The link appears below all the content that is loaded. Since there is some setting in your browser blocking the loading of one XHR request to Reddit the content doesn’t load at all and the BMAC links appears at top. Donating is completely optional and I don’t expect people who can’t see the content will donate anyway. However once in a while when someone donates I get some satisfaction that people are using what I built and are happy with it.

Though I agree the link is too big and feels like an AD I will make it smaller, or you can just fork the repo and remove the link entirely.