Uber wins when
You only want point-to-point transport and do not care about a curated stop or arrival uncertainty.
Denver comparison feeder
Uber vs 420 Airport Pickup Denver
Uber is fine if you only need transportation. It is weaker if the actual goal is a dispensary stop handled cleanly on the way into Denver.
420 pickup wins when
The stop is the point, and you want one direct operator lane instead of managing airport rideshare and dispensary routing yourself.