France is only going to continue fund the Russian military for 5 more years. It is nice that they are speeding up the process away from fossil fuels, but 5 more years of funding a military invasion is 5 years too much.
Even if every single country in Europe was willing to kill their own citizens (removing cheap heating during cold seasons) by stopping using Gas today the Russian invasion of Ukraine would not stop.
France has, buy providing funds to Russia, enabled the invasion of Ukraine. France couldn't know this would happen before Russia actually sent in the troops, but that claim of innocence is lost now. If you provide funds today to Russia we know what those funds will be used on, and with the knowledge the buyer carry some responsibility just as if they donated money.