Austin is way too high on that list. I wouldn't call it bike friendly. Yeah a lot of people rides bike but you really have to be committed to riding a bike in Austin.
I think that's the same for every city on this list. I bike every day in Portland and I wouldn't even describe it as friendly at all. Bike lanes appear and disappear at random and we have almost no protected bike lanes downtown. Maybe some city officials think it is but I've even been on bike boulevards and had people try to run me off the road. One lady ran a stop sign and almost hit me, then followed me for a couple blocks after I yelled "STOP!", then she rolled down her window and said "I shoulda hit you fa**ot!" and sped off.
One guy cut me off on the same street and kept brake checking me and saying "how does it feel to have to slow down all the time!?" I told him to get off the road with all the bikes painted on it and take another street. He told me to get a car and sped off and I kept catching up to him at stop signs it was awkward as fuck.
I usually have 2-3 bad encounters with drivers and other bikers every week.