Crown
¯\_(ツ)_/¯
Ahhh, didn't know that. Now that you say it, they did seem like general comments which you could place under any video. Don't know how to explain that better, but they look like comments which the guy had stored in a textfile, to paste them under videos. Thanks for the info.
Yeah, that's what it is. Youtube has detected he/she is making the same comment over and over in a short period of time and treats it as potential spam.