Never. You are missing my point completely. To operate in that way is just as rude and irresponsible on CB, 11 meter, 10 meter, whatever.
If you operated that way on 10 meters, you would be trashing the band and causing interference to other stations on the band. That is bad.
Why is it any less bad to do it on 11 meters? You are still trashing the band and making it harder for other operators on the band. It is citizen(S) band, as in plural, not one citizen. Other people have the same right by FCC rule to use the band without being subject to excessively wide, dirty, overpowered stations running echo and other gimmicks that take away from readability of the signal. Why be a dick when you don't have to?
I hold licensed hams to a higher standard.Hams are supposed to operate in a manner considerate of other operators, not just other hams, but ANY user of a legitimate radio service. You have a responsibility to yourself and the amateur radio service in general to continually seek to educate yourself on proper, accepted standards of operation and conduct. I don't see why that should change when you go below 28 MHZ. You still should be considerate and try not to interfere with other people's enjoyment of the hobby.