I understand them.
Never really fukked with Macron but was willing to give him a chance as it was a new generation with possibly a different way of governing and leading. I think he means well when he wants to reform the country as it's true that our institutions need to be more efficient and modern. There are stuff to change when it comes to our job market, that's true. Economically, he follows the works of "social-liberal" economists like Philippe Aghion. If you're interested (and understand technical French

), he has public classes available on Youtube so you can understand what he preaches economically. Dude has been parts or was a teacher to several Economic Sciences Nobel Prizes so it makes sense that Macron seeks its advices and to be frank, his research is interesting but very stirred towards the scandinavian model : very flexible job market, more competition between companies with less state-owned strongholds, good saftey net and benefits, more social mobility (mostly).
So I believe that's where Macron and his teams aims to drive France to. Even though I do not agree fully with Aghion's economical views (he really is a centrist though he leans to the left (a bit) on social issues), but his theories are very sound and most importantly he backs it up with data and research (I mean that's his work

) I never finished reading Piketty's book but to make it simple, him and Aghion are more or less opposites when it French economical ideas. They do agree on things but Aghion will always side with more competition and less state presence.
The issue with Macron (because the Gilets Jaunes thing is mostly a revolt against him that was triggered by specific policies like the fuel price) is not much that he tries to follow Aghion's works. It's that like the European Union in its building time, the socio-conomical reforms are first and foremost economical with no emphasis on the social part. It's at a point when even Aghion disagrees with what he's done thus far and found disappointing that he didn't focus on the social parts of his program. To be frank, the changes he wants make sense (theoritically, I agree with the Carbon tax because we need to make changes in our society to push an ecological revolution) but Macron like Sarkozy in his time believes that he could makes drastic changes in the French society without much empathy which appears brutal to the citizens. France is difficult to reform and as always been so it needs to be surgical to do so but urgency makes politician takes the butcher's way which will always be meet with resistance.
A part of being president is to be able to convince the citizens and make them accept and understand difficult policies because they are needed. But Macron like Hollande, like Chirac, like Giscard d'Estaing and many more politicians is a product of the ENA which the the "school" that makes the French elite. From that school, come from a non negligible part of our politicians, CEOs or influencers. Not every one that is from the ENA behaves that way obviously but I think Macron has this kind of arrogance of a certain elite that would make it take decisions for others that don't need explaining because it's good for them no matter they like it or not. It's a very royal approach of the president role (that is very French to be frank). We did behead several kings but deep inside, the French democracy does enjoy royalty. But not in name though
Also, Macron has against him several things :
- he's young and inexperienced as a politician. As a matter fact, he's younger than the average Frenchman (42, and he's 40 or 41).
- he was never voted in before being elected president. All his past experiences were him being "chosen"
- his past experiences are in Finance, which wouldn't be an issue if he was less of a centrist I think.
So all in all, people have this image of him that is that even if he's brilliant, he doesn't understand their day to day struggle and the violence of having to pay more for fuel or receive less aid. In the macro scale, the policies are good (in theory) but this leads to micro-scale (the individuals) impacts that Macron doesn't seem to care about. So that's why the Yellow vests protests.