YouTube launches a $7.99 per month, ad-free Premium Lite subscription

Have it . Never seen an ad besides what the creator makes in his video.

Nope. Unless you're talking about sponsors that content creators hock.

The app allows you to skip to commonly skipped-to-areas, which often makes skipping that kind of content very quick and simple. I'm not sure if that's a a feature of the free version though

Had it for years no ads ever anywhere on YouTube.