Youtube is owned by Google, so if you're logged into gmail, or another Google service, you may not see the message. Or, youtube may not like that fact that I came from FR, which they can see when you visit their site, so they want to ID me.
Google has been removing conservative content during the book burning cancel culture party of late, expect leftyness.
“Be-baw, Youtube presents “Sign in to confirm your age” and “This video may be inappropriate for some users” instead of the video. How can that be matter of being informed or not about youtube?”
I didn’t know that because I didn’t have to do it. And I’m really not all that concerned about Google. I check Google News pretty frequently. Most of their listings are from left-wing media outlets, some not but I occasionally read one because I do get information from them.