I think cycling advocacy is alive and well, but the gains aren't as dramatic, because now they are incremental improvements to what has already been won. You are seeing miles and miles of shared bike lanes going up all across the US. I think back in the 2000's even that infrastructure was a pie in the sky dream. The jump to the next level of infrastructure hasn't taken off yet, but you are starting to see some cities actually invest in segregated bike lanes and bike highways. Since those changes require actual work and not just paint on the street I think they will be slower and take a lot more time, but I see them coming.

For instance, inside DC there was a number of dedicated bike lanes, and even a good number of segregated bike lanes. I could get all through the core of the city on a bike with relative safety, once you got out into the north Virginia suburbs the bike infrastructure turned into mostly painted lines, with a few notable trails and then by the time you hit the outer suburbs there was nothing, but they were starting to put painted lines out as far as Reston, VA ( 25mi outside the city )