Large lectures (100+ students) should have little to no interactions between students and lecturers. It has been this way since the 11th century. You are not supposed to be learning the material for the first time during a lecture. Using the syllabus you should do the pre-work and the lecture concretizes the information. Office hours, tutoring, self study, homework, and online/AI resources can be used as tools to deepen your understanding of the material outside of the lecture hall.

This is a terrible way to learn. Lecture halls are uncomfortable and synchronous, which are objectively less convenient than reading or watching videos at home. If someone wants that then they can organize watch parties, without forcing it on anyone else. Synchronous and uncomfortable should be reserved for interactive things, like in a flipped classroom