You wrote:
You never answered my questions. Who decides whether someone is sufficiently comprehending?
And you never answered mine:
Do you suppose an infant understands their baptism?
However, to answer you, only God knows what a person understands. The church has to function on outward, observable criteria to administer the rite of baptism, as is biblically indicated, to believers ONLY.
Or are you into branding the devil’s cattle?
“Do you suppose an infant understands their baptism?”
No, I don’t suppose they do.
Do you believe that unbaptised children go to hell?