Are you familiar with the Freer Logion?
Yes I am. Disputes come and go. You’re focus on it is nothing more than an attempt to discredit scripture. Inclusion or exclusion changes nothing as far as the gospel of Christ is concerned. Nothing in any portion of the gospel of Mark has ever been proven in error. Rely on speculation and myth if you will. I trust the word of God and the testimony of the Holy Spirit. Satan through his pagan emissaries has been at work to deceive for over 6000 years now. His and his emissaries time is short and their end horrific.