Did you actually read the french (and german green) petitions?
https://web.archive.org/web/20050404190912/http://www.decadi...
Here is the letter from the well-known intellectuals:
https://www.dolto.fr/fd-code-penal-crp.html
They were not just about making the age of consent equal for gay and hetero sex. They were also pushing for lowering and abolishing the age of consent altogether. You can see this as a 'submarine'. From the wikipedia article:
"Michel Foucault argued that it is intolerable
to assume that a child is incapable of giving
meaningful consent to sexual relations."
There is clearly a structural similarity between contemporary apologists for genital mutilation under euphemisms such as 'gender affirming surgery' and the what the french intellectuals demanded 50 years ago.