Tell me exactly how you calculated the number of Monero users and calculated the number of coinjoin users to compare to each other.
You are playing it stupid. There is no need to calculate, the difference is evident. Are you going to even bring up the ridiculous idea that Coin Join users may be more numerous than Monero users and not the other way around?
If you're just guessing, then why are you so quick to assert that your claims are "not debatable"?
There is nothing to debate in how the Monero protocol works. You can argue about the efficiency of its protocol to obfuscate and offer Privacy, but the way it works can not really be.