The data I see says bike commuting nationwide grew 43% from 2000 to 2017, despite a dip leading into 2017. It's not just about powered alternatives, but spaces to do it. If you build a road for a powered vehicle and make the barest accommodations for everything else, of course powered vehicles will dominate. People take public transit more when you build more. They bike more when you build protected lanes. It's not about saying people should do these things, but rather saying that cities should better build for them.