This is the right answer.

Lots of people use their vanilla browser when connected to a VPN, this is not just for Tor, neither does it claim to be an alternative to using Tor browser or Mullvad browser.

This would make it harder for French users to find an alternative browser, making even more people will stick to the pre-installed Chromium based one.

Sad as it is, I think this is the optimal solution when it goes through. A lot of EU countries are against monopolies (France is not an exception), this way they would realize they are enforcing a monopoly and singular dependency.