I watched some snippets, and would like to put forward some points in support of the former:

- The voice is clearly TTS, which I think really loses something. Not having variation or stressing particular parts with intonation is a big deal in teaching. The beginning of lecture 5 has a pause in a weird spot (surface).

- The intro to the first lecture is already unnatural: "And that's of course now we're going to start working with functions of more than one variable."

- The scaffolding in lecture 1 is off to a bad start. The lecture tries to rope the student in with a question, but the question uses the notion and notation of a vector that has not been introduced yet. This reeks of a prompt "use a (motivating) question to introduce the topic", but a question that cannot be understood by a student does not help.