An observation I've made too. I don't think it's an accident that this was done in the Netherlands given that in central and Northern Europe in particular there was always a healthy and open attitude towards nudity and sexuality and a "Freikörperkultur"
I noticed this with the decline of mixed saunas and changing rooms in public baths and I don't know if it's an Americanisation of culture but people seem to become increasingly neurotic about sexuality and people's bodies.