Basic science like physics and chemistry are a problem for woke authoritarians because you can do experiments in high school labs, and this introduces children to things like standards of evidence, the scientific method, statistical rigor, the idea that some things are universally true and false etc. More importantly it teaches them to think for themselves. Science is at its best when the teacher says "X is true" but then also "and here's why you don't have to take my word for it", which is a powerful introduction to adulthood.
All the replacement topics are united by an inability to do experiments. Instead these fields rely heavily on unvalidated simulations of assumptions. These specific topics are also clearly selected for left wing environmental radicalism e.g. "earth science" means climate change, "infectious diseases" means teaching kids how important and brilliant lockdowns and masks are, "biodiversity" means the importance of not building anything and so on.
Universities are a power base for the left because they strictly teach students to silo themselves and never question professors, especially not those from a different field. High school doesn't teach that mentality to the same degree. If this curriculum does goes through, science will immediately be redefined as "here is what academics say, memorize it, regurgitate in exams, if you do that accurately you're good at science". This is exactly what they want, because if there's one thing that COVID revealed very well it was the rampant fear of those in power of anyone who doesn't define science as blind acceptance of the word of government and academic authorities.