Unions in France are weaker and less prevalent than in many European countries. They organize strikes more often because that's often their only bargaining chip.
I'd gladly give up convenience and the need to have everything available to me at all times, for more collective bargaining and better treatment of human beings. If a labor force goes on strike, you should probably ask yourself why, and if you would do the same, rather than just taking it as a disruption to your life. Would you rather get your crap from Amazon in one day, or would you rather support better treatment and benefits for 10s of thousands of human beings?
It's not really a convincing argument for most people, many would pick the former, and that's why Amazon is successful despite bad labor practices or unionization.
Oh no, 5 weeks of paid time off, 35 hours work week, universal retirement fund, physically hard jobs getting to retire early. And once a month some trains don't come in, and they dare warn you a week in advance. France is truly unlivable, a socialist hellscape :(