The teaching of natural sciences has lost its former rigour in favour of social science claims that are blatant nonsense, such as the argument that scientific knowledge is not based on observation, hypothesis generation and rigorous testing by the world scientific community, but is “constructed” within the framework of the political and social convictions of scientists.

This first person never gives an example of when science has constructed scientific knowledge within a political/social framework. This gives strong vibes that they are mad about the distinction between sex and gender. Without an example it’s hard to know what they are going for.