Regardless of pop up lanes or not... did anyone happen to notice the reduction in automobile traffic during the lock down and a few months after... Ya wanna increase bike use, just get rid of those giant rolling couches.
I saw whole families out riding bikes in places that frankly had only seen the bravest hard core cyclists prior to the pandemic... Cyclists don't need or want bike lanes... But they don't want to be run over by road hogs either.
Seriously, what was common in all those locations was a reduction in motor vehicle traffic... even air pollution decreased. Solar panels worked better. Hint hint... (It's the cars, stupid!)