Yes and no. Affiliate marketing can generate passive income, but the passive side of the income usually only follows putting in a few years of hard work to generate the brand and audience you'll need to begin generating those passive sales. I have multiple sites earning passive income, but each of those sites took a lot of front end work to build up to that point. And not every site gets to the point of passive income. Some sites require continual maintenance though the revenue they generate can also allow you to pay for that maintenance to be done vs. you needing to do it yourself.

If you have pop-ups and optins on every page, I would have to think that it would be a lot harder to convince someone to link to it. Especially since the pages where you have your optins (and probably receive the most traffic) are probably the same pages that you have your best content on as well that you'd be hoping to pitch in your outreach campaign.