>go to the YouTube channels of companies like AWS, Azure, GCP --they publish 10 to 30 minute videos of various employees, from product managers to architects etc doing explainers on various topics
1. Most companies don't do that.
2. AWS, for example, has what, 100k employees? What percentage of them are actually featured in those videos?
>More generally --the billions of hours and growing of audio video on YouTube, TikTok, and other platforms -- is literally someone in real life (most cases), likely some employee, that could be or become a middle manager somewhere.
A vanishingly small percentage of that content is generated as part of that middle management job. Yes, many people choose to place themselves on publicly accessible video, but it mostly isn't part of a mid level office job, so not doing so isn't incompatible with holding such a position.