I agree it's technically possible. But obviously, this is an idiotic tactic and requires your whole team to be both overpowered and skilled at the game to pull off. People who meet those criteria would only bother doing this to show off, and wouldn't claim that "no-one ever goes SSJ/Kaioken" in effective CCBD runs.
Running CCBD w/o a dende is definitely crazy and would only be the last resort. Again, I said what I said just to tell people it was possible.
I have observed many parties that were looking for a dende to run CCBD but couldn't find any, and they were just wasting their time while waiting for a dende and doing nothing.
What I said could be helpful information ONLY to those who didn't know they could run F50, for example, w/o a dende. But again, that should be the last resort since there is no reason to play a game like that when there is absolutely a better way (i.e. having a dende in their party), unless they just intended to show off or challenge a harder tactic on purpose, like you said.