France has a constitutional right to free speech since at least the 18th century, not sure what you mean. There is a Declaration of the Rights of Man, which is still part of France's constitution. France is also bound by the EU Convention on Human Rights. Why would you compare France to Singapore in this regard? That's strange.

Google any of these terms to see examples of people who were actually fined for speech in France, after 1950, and well after the 18th century:

- Hervé Eon Sarkozy fine

- Éric Zemmour 3000 fine

- bardot degenerates 20000

- Je me sens Charlie Coulibaly fine

None of these were threats or incitement to violence. Just insults.

And you talk about a constitutional right to free speech since the 18th century, but mocking Catholicism could be prosecuted until 1881 (i.e. in the 19th century).