What happens when they translate it wrong though? Then it's all for naught and would have been better to just say Kaiokenx20.
Then there is Goku's name some can argue it is 5 and 9 or 5 and sky or just Sky/Cloud. I fear the day they give the literal translation for Goku. Kakaratto would probably never be translated either lol. A lot of words and names do not need to be translated.
Kaioken is one of those names that does not need to be translated.