Just search "Netherlands bicycle snowing" on Google Images to see how normal it is. The top results show both children and the elderly cycling on ice and slush and snow.
Yes it is normal here, but it is also hilariously fraught with low-stakes peril. Dumpert always has vids of people busting their ass trying to make a turn or they hit an icy patch every year. I've had a couple of falls on ice here and I am not confident of my resilience long term doing that as I get older. So I avoid biking when it is frozen. But since that is only like a week or two out of the year, it is no big deal
