If they just went by the ground, this wouldn’t be debatable. None of this crap ‘plane of the endzone’ or how far did he lean forward then get pushed back’ stuff.
Touchdown is literally that. Touching the ground of the end zone. Foot, knee, ball, whatever. Downs are down. Where did what part touch the ground first. All of which is objective and easy to replay.
“None of this crap ‘plane of the endzone’ or how far did he lean forward then get pushed back’ stuff.”
That “crap” has been in place since 1889.