That's literally not how it works, anything else is Russian fearmongering.

Also a bunch of countries fucking up a single country who can't even conquer their neighbor does not a world war make. If it did, the Gulf War would be called WW3 already.

If French were to send soldiers to Ukraine those would be French soldiers, not NATO soldiers. Attack against them is not an attack against a NATO country. Countries like Turkey and USA have been involved in their own conflicts aswell where they have had their troops attacked and this haven't triggered article 5 either. That's not how it works.

NATO is a defensive alliance. Joining a defensive war of your neighbor / any other country on their side isn't defense of your country. So it doesn't apply. Further, even if Russians attacked France, then it most likely wouldn't apply if they had an army in Ukraine. Otherwise any country could support some movement for independence in a different country, start an uprising, join them and then call article 5 to take territory.

Bud, read article 5 before you spout nonsense.

It's a very very risky escalation not because of NATO, but because France is a nuclear power in its own right. And if nukes start flying around, NATO or no NATO, WW3 has already started.

It's not that simplistic.

I barely have a surface level understanding of how NATO works and I know this is false. Try harder.