Is video making podcasts obsolete?
No.
I'm two years shy of 30 and I've been listening to "podcasts" - that is, audio programs distributed over RSS - nearly every day since Middle School. In all of that time, the word - not the medium, I'd argue - podcast has been so unnecessarily stretched to oblivion. Before making statements like this... can we please just... try out a few different words to describe what we're talking about here?
I listen to content because I be Doin Something dog. Cannot and will not look, and the extra production time required to just make a video version has continued to cause friction with the sort of content I actually want to hear.
