From the article:
"VeiligheidNL estimates that there were actually some 80,000 injuries of which 50,000 were serious."
And, of course, the idea of biking and the reality of it are quite different things:
https://www.bikelaw.com/2019/05/amsterdam-not-cycling-paradi...
I love how people tend to have this impulse to reduce reality to a single variable: Bikes = human power = exercise = good.
Reality is a complex multivariate problem. When you look at more variables you often discover something quite different than the assumption borne out of that single variable fantasy.