problem is that people seem to think they have to play by rules that some tournament or organization makes up for their own benefit.
play by the common and common sense rules.
ten ball made last is for top pro's in tournaments . and no one except them should that rule should apply.
For expediency, You are absolutely right. In a tournament field, it speeds things up.
However for 1 on 1 match play, I much prefer the 10 Ball shortened format of 14.1.
When you can’t run 10 balls or what your opponent leaves you with, short cuts like
a combo 10 can help you win some games or finish quicker but running 10 is harder.
But again, when you have a lot of games to play, like in a tournament field, combo 10
ball is almost mandatory because games will take longer, especially with varying skills.