I can't generalise about the young French left; my answer will be biased by what I've seen over the past couple of weeks in the news and on social media.
On the left, they mostly seem to be attracted to the Mélenchon option: raise salaries, freeze prices, tax the rich. To answer your question, I would then assume that the idea of expropriation is the most appealing to them. For the French, the current situation is the result of Macronism-fuelled inequality. That's not to say there isn't a kernel of truth to it, but France has been running on fumes for a long time, and the French don't seem to understand that we can't keep financing the current level of public expenditure (57% of GDP) with OAT yields approaching 5%, not that they understand what that means anyway.
On the left, they mostly seem to be attracted to the Mélenchon option: raise salaries, freeze prices, tax the rich. To answer your question, I would then assume that the idea of expropriation is the most appealing to them. For the French, the current situation is the result of Macronism-fuelled inequality. That's not to say there isn't a kernel of truth to it, but France has been running on fumes for a long time, and the French don't seem to understand that we can't keep financing the current level of public expenditure (57% of GDP) with OAT yields approaching 5%, not that they understand what that means anyway.