there's no such thing as a "good" or "ethical" advertisement. the entire field is the application of psychology towards getting you to buy shit you don't need or subscribe to a service you'll forget about

sidenote: if you use newpipe (alternate youtube client for android) and want sponsorblock (extension that skips the sponsor segments in videos), there's a fork which adds support for it. the mainline devs refused to merge because they consider sponsorships to be "ethical", which is a complete load of shit