Houten has a population of 50,000. Plenty of American cities much larger than that have the sort of human-scale features and transit you’re describing—they’re all over Portland, OR.
It’s big because lots of people transit through; the bridges are high because they go over interstate 66. It’s big because because one of the main purposes of the station is to serve as a transfer point from cars to light rail.
Would you suggest that the bridges over an interstate be 10 feet high? Would you rather the rail system just not service that area?
Tysons is next to a ring road for DC, and the greater DC-Arlington-Alexandria metro area has 6.6M.