Arguably "content creation" is core to every > middle class job now - you have to get people onboard to get things done. Personally I still think writing is more valuable but perhaps the knowledge creation and sharing (_inside_ companies) of tomorrow will be done by making and watching videos.
I very much do not want to be part of that future, but I recognise it a likely possibility.
Arguably, it's the case today to some degree with company meetings/team meetings/etc. typically recorded for people who couldn't attend live. But it's pretty low bandwidth for most purposes to communicate basic facts in the absence of interaction. I for one rarely listen to recordings of meetings I miss and I assume I'm pretty typical. For many purposes I'd much prefer a 1 page email.
It's like all the how-tos on the Internet that don't really have a visual component but are a video anyway.
From experience as the corporation gets larger communicating and communicating-adjacent activities approach 90-95% of the time. The remainder is doing.