Im aware that adblocking has been around for years but this blocks the pre-roll ads 100% of the time. Adblocker still lets some get through especially when I'm working on my own channel for some reason. With a adsense account you have to be very careful not to click any of your ads or let a pre-roll ad play in full or you could risk loosing your adsense account. So this is more of piece of mind for me as the ads do not bug me.
I'm sure there are other people out there that don't know about this.