I'm not against classes in other languages, especially those that follow a typical OOP pattern (i.e. Java, C#, etc.). See above for my reason re: JavaScript.
So appeal to authority?
A lot of people are into the "functional JS!!1!!1!!" hype and blindly dislike anything related to OOP with little information.
Also, TS does not force you into OOP. TS codebase itself does not have any classes.