You can’t repeatedly dissolve the chamber. I don’t think that’s a bad thing.
The real problem isn’t with the constitution. It’s with the fact that the French are no longer able to create coalitions around a project. The whole political system is built around the idea that one group has a majority and does as it pleases until the next election. Talking to others is completely alien to them. And that is a real problem.
Most of the other European countries work with coalitions. It makes much more sense (I understand that this is alien to US people).