From https://newpipe.net/blog/pinned/newpipe-and-online-advertisi...:

> In summary, it can be said that sponsoring is a good approach. It is fair and non-discriminating to all users, preserves their privacy, lets creators select their partners themselves, and provides them with a larger share of the revenue. Even though there are some disadvantages, it is more or less beneficial for all sides. [...] Ethical advertising, for example through sponsorship, should therefore not be touched by us. This would turn our key selling proposition from being privacy-friendly to being a gatekeeper for advertising. And this is not what NewPipe ever has been or wants to be. We’ve always stressed that NewPipe’s main goal is to protect the users by maintaining their privacy, not to, e.g., provide features a user would otherwise have to pay for, for free. Regarding SponsorBlock: after a lot of discussion within the team, we decided not to support this system. As stated earlier, we don’t consider advertising in general problematic. It’s the unethical, privacy-invasive systems that are very common today which we consider evil. Sponsorship provides a mostly ethical way of advertising.

They wrote about it here: https://newpipe.net/blog/pinned/newpipe-and-online-advertisi...