YouTube TV shows ads which are generated from the network themselves and as the ads are live they are unskippable. However, if you pause a show, you can fast forward through ads until you catch up to the live version of the program. Hope this helps.
Appreciate your feedback. This help us improve your YouTube TV experience. We'll pass this along to the team. Please share your thoughts here: https://goo.gl/wXX1G9 . Thanks!