Using Tri-Rail I had to make 2 transfers, train to shuttle, then shuttle to the other shuttle. $3.75
google transit says I could have used 2 city buses, starting with either route 22 81 or 112, then tranfer to the 1, so only 1 transfer, both of which I assume would have had more generous aisles, and low floor, than the train station shuttle bus, which had at least 2 steps. $1.75 each = $3.50, so bus would have been less money than train.
It looks like the 81 doesn't come into the station, so I would have had to lug my bags over to Broward Blvd., so that wouldn't have been my first choice.
the other 2 routes do come into the Amtrak station. And remember I was headed for rental car, and the 1 bus's sole airport stop is the rental center.
But good railfan that I am, and armed with you mentioning that the shuttle's scenic route may have been due to construction, I will remain happy that I used rail as much as I could.