Given that his party (En Marche) is nominally center-left, I think the biggest beef the rioters have against Macron is the whole idea of neo-liberal economics, the idea that liberal ideas can exist with a thriving economy. The protests are supposed to be about fuel tax hikes, yet I am hearing (from an article I just read) that there is "dissatisfaction with Macron's economic policies, which many voters feel are in favour of the wealthy and big businesses."
My Argentine friends in BsAs are nearly all leftist Peronists, and they are applauding the riots in Paris. Yet they are all pretty spoiled with past Peronist policies that gave them "free" education and "free" healthcare, and they despise the current leader in Argentina (Mauricio Macri) who has sought to get their spiraling inflation under control by cutting services, and thru implementation of austerity measures.
So, I think the whole protest comes down to people who are against neo-liberalism.
Nothing is free. Someone has to pay for it. Which does't mean that's a bad thing. But when you start thinking something exists in-and-of-itself, without a cost, that's a recipe for unrest - as wrong as their original assumption is.