What are weapons of choice to, in the end, quickly produce an animated GIF with mainly text-based frames? The format (size, grid, colors, font, lay-out, ...) has to be about the same, so you cannot start PBRUSH.EXE, aim, type text, save and convert.
YouTube videos with just audio and lyrics, and perhaps showing a static image while there are no lyrics, may be a well-known example. GLE? An utility which almost works like a text editor?
I can create my own image files, with a text file as input and automatic processing to create the whole movie, but unfortunately using any font is more than a bit of a stretch.
Having to type is no problem, as long as you can edit and re-use text you've saved as the previous image. Edit as text, not as pixels.
In theory GLE seems to be a candidate for fully automated processing, including variable delays and non-text images which can be inserted later. In pseudo-code:
[blank] // blank initial frame, default delay
The Pope // First text frame (title), matching default delay
Is the Pope catholic? // Second text frame, variable delay based on the text
No, a Pope is the leader of the Coptic Orthodox Church of Alexandria. // Second text frame, variable delay based on the text
[ALEXPOPE.GIF] // insert image, default delay
Thank you for being bored! No fun intended. // Final text frame, variable delay based on the text
[end] // The end
But having to type, save, edit, save, edit, save, ... and compile a video manually is no big deal. It ain't books. A lyrics videos is a good example, albeit such a video is already quite long (and requires almost perfect delays).