Hill of beans,
“Should we also stop the Choson from breaking the glass under the Chupa since there are well documented instances, multiple times, where he cut himself and need to be taken from the chasuna?”
What the Choson chooses to do, especially if there is a minhag associated with his actions is not to compare to placing the Choson on a table throwing him off balance while elevated from the ground putting him at significant unnecessary risk.