I always enjoy a good video essay, and it's probably a bit of a different niche that'd reach a different audience (+ more likely to be picked up in a social algo). Though it'd probably take a bunch of extra work scripting and editing to convey approximately the same information as a podcast would.
Also, I'd assume that few who doesn't make a hobby out of tech would find protocols interesting - but might find the benefits of a protocol interesting if it's slightly abstracted from explaining how things work under the hood.
That said, I've never done a podcast or made a long form video essay, so don't put too much stock in my 2c.