I agree with everything you said but for walking. Bikes can’t go everywhere, biking in cities is dangerous and uncomfortable (irrespective of good or bad bike infrastructure) and it’s just not as satisfying as putting one foot in front of the other. Yea it’s much slower than biking but at least a magnitude more rewarding in my opinion.
Good bike infrastructure absolutely makes it safe and comfortable. Separated bike lanes is key. I also love walking, but this kind of rhetoric is just car-centric propaganda.
Even good bike lanes are packed, sometimes shared with pedestrians and involve crossings where you can intersect with cars. That might be okay for some but it’s very different from biking on a trail.
Of course it’s a car centric argument, that’s what I’m advocating for.