No. Cosmetic filters don't stop the message - they just temporarily hide it from view. The anti-adblock script will continue to run in the background and will eventually block you from watching videos. Please don't use, share or recommend using any of those filters and don't report any issues when using them.
That’s still a cosmetic block and the script will eventually cut you off from the servers is what I think they more saying - as in, the servers will just refuse to send you the video.
This was my gut reaction as well, but dont do this, the makers of uBlock Origin warn against it! https://www.reddit.com/r/uBlockOrigin/wiki/solutions/youtube/detection-faq/
Can't I just hide the pop-up with uBO's Picker?
That’s still a cosmetic block and the script will eventually cut you off from the servers is what I think they more saying - as in, the servers will just refuse to send you the video.