Girl's Life v Boy's Life: "Do you Know When to Shut Up" vs "Jokes to impress"

You could start with a more complete definition, Wikipedia puts it better:

“A stereotype is a thought that may be adopted about specific types of individuals or certain ways of doing things,[1] but that belief may or may not accurately reflect reality.”

When discussing a group of individuals, characterised and identified by their ideology, then assume they actually meet the criteria for that ideology, that is not stereotyping; not in any meaningful sense of the word, and not in a way that has any relevance in this discussion.