The statement "Russia is a more reliable partner than the United States" was made well before the aggression, I think it's safe to say it doesn't hold today.
The other statement by JLM is "It is a matter of diplomacy rather than artillery fire" - I don't see how this is pro-russian.
The RN though, is literally funded by Russia. So if you want them beat (and you do), this unity is necessary.
LFI are hardly extremists. They're not revolutionaries, they're not communists, they're just socialists.