I can't really disagree with any of those points, but I far prefer cycling along at several times the speed of a jogger, while using less energy in the process. I did once imagine a network of privately funded cycle-paths in the area, but since folks just naturally assume that's the Gubmint's job...
it'll never get done. Kinda like space travel in the last century.
Of course there are all-terrain bikes, too. Ride when you can, push at walking speed otherwise.
I guess it's a "diff'rent strokes" kind of thing. The roads are there, having completely displaced whatever technology might have occurred in a free market, so they're what I use, even though they're getting crappier every year (and they just keep throwing more and more money at 'em).
I'll still say that cycling oughta be a libertarian sport. The only way to get ahead by dragging someone else behind is to physically obstruct them. I've ridden in pacelines that moved much faster than an individual rider could have managed, without costing *anyone* anything. We just took turns at the front. That's pretty cooperative, and libertarian, IMHO. Where it gets more collectivist is when a team member is told to take the front for an unusually long time in order to allow the favored-son to arrive at the final stretch fresh and ready for the sprint. Sure, it can be purely voluntary on the teammate's part, but it's more of a general example than a universal law.