This is such an indisputable point that as a learner I cannot really argue.
But even after several months of listening to the new Bunpro audio I still stumble on every pause after possessive の, and some others.
E.g.:
70年代の(pause)エネルギー危機は…
サービス業の(pause)マネージャーを任されている私にとって、…
My new hypothesis is that it has something to do with intonation and context.
When would I expect (or add myself) a pause after possessive の?
Only when adding an emphasis or looking for a word.
For example:
A: 仕事は何していますか?
B: サービス業のぉ(pause)えっと、マネージャーですね
In this case there will be a distinct intonation of の to mark that I’m taking a moment to think, so that the listener knows to wait a moment.
With Bunpro I’m probably expecting a prepared sentence, not an impromptu conversational response, and the intonation is flat, and the locations don’t seem like they add a meaningful emphasis.
So these pauses end up sounding like just taking a breath. At which point is a pause really necessary 1 word into the sentence.
Maybe it’ll fall into place for me after hearing at least one non-Bunpro source voiced in a similar way.