From the article's linked source :

“Academia is not a political party, and students should not be afraid to express their opinions in class, fearing it would affect their grades.”

Also:

According to the code, discussing politics during lectures will only be allowed if it is relevant to the respective course, such as political science.

Not sure why this counts as conspiracy. This is 100% logical and normal. Nobody signs up for political discussion in Mechanical Engineering courses.

Doesn't matter really, it's good as a general rule.

If the class isn't about politics, I see nothing wrong with this.