YouTube still doesn't care about one character usernames :-(

[Pearl]

People that made youtube account in 2005 - 2011 might lucky .... because they don't need to type user before your username ... like me

I made my account this month. I don't need /user/ in the link

 

[SlenderMan]

I made my account this month. I don't need /user/ in the link

So you're lucky

 

[unknown_user0032]

youtube.com/e

This doesn't work either ^
If you add user/ in between, then you can see that the channel is alive and well.

ah I see