Very cool! I'm wondering if Europeans in general are more open to the concept of FIRE at a very young age compared to most Americans who seem to think its impossible?
I'm paid 3 to 4 times more in the US for a similar job position, than what I would be paid in France. I feel some countries such as the US provide more opportunities to 1) Spend less and 2) Make more than countries such as France. The result, in my opinion, is that France has much less income inequalities, but it also reduces the possibility to retire early (less options).
Also, France has a tax on wealth beyond 1.3 Million euros, and that includes the value of your house (with some percentage exemption on the value of the house). For people trying to live off their investments, that puts a cap on how much you can expect to live off of. The rate is significant enough that it blows the 4% rule if I remember correctly. As a result, "FI" in France requires doing lots of clever things such as owning your own company, buying art pieces as investment, etc... to avoid having those assets counted towards the Wealth tax.
Investing, last time I checked, is also more expensive. Super low fee ETFs like Vanguard and Schwabs exist but to that you need to add fees from whatever institution you go through (which is true pretty much everywhere outside of the US btw)
Not everything's dark. This is counterbalanced by great healthcare and social security, so you probably need much less to live than you would in the US.
But the result IMO is that it is much more difficult to do something "different" such as FIRE in France. To get the full Social Security you need to work 42 years. If you don't and expect to live off your investments, you'll probably be hit by the Wealth Tax. I don't know if the rest of Europe has similar situations.
That being said, there exist resources/forums about FIRE in French and how to achieve it in France.