I use uBlockOrigin and the now defunct uMatrix - I never see any ads or warnings related to ads. uBlockOrigin may also work similarly with noScript - I've not

I use uBlockOrigin and the now defunct uMatrix - I never see any ads or warnings related to ads. uBlockOrigin may also work similarly with noScript - I've not checked. Might be worth asking on the NewPipe repo on github how they avoid the ads on the server side.