And in what sense can the following deleted posts possibly be taken as inappropriate?
No, there's only one technology for multisig, there's nothing "different", or it is not multisig. Try to use some other names.
You are incorrect about this.
I repeat: you are not in a position to tell what technology XC has or has not implemented.
XC has technology that you do not know about.
Therefore you are not in a position to make the above statement.