I fail to see how it is "clearly" indoctrination as it is taught critically (as is well evidenced in the link) unless you are some sort of "anti-SJW warrior" against any sort of modernization of our curriculum.
Then you are doing mathematics and science wrong.
The whole point of those disciplines is to eliminate human bias in favor of objectivity in order to accurately understand the world, or to make correct conclusions or predictions based on axioms, observations, and data.
If you introduce biases like gender ideology into those subjects, you are defeating the purpose.
Right now there is tremendous societal pressure and varying outcomes depending on _who_ you are (race/gender/other socioeconomic factors) and the entire point is to remove that from the equation to lead to better outcomes overall.
To do that, you need to be aware of those factors and control for them. That is very basic science.
You seem to be advocating putting ones head in the sand and saying that those factors don't matter and should be removed.