Because you turned a completely innocuous discussion about nude beaches into an unhinged rant about sexualizing children. Nudity does not inherently mean sexual.
A short comment like “yeah I don’t know how I’d feel about children at a nude beach” would have been fine, but the extent to which you’re talking about it comes off as creepy and projecting.
For anyone who doesn’t read the article, the biases shown in the thumbnail are not the final result. After doing a million runs, every digit had close to the same probability of appearing.