I once watched a Nobel prize winner present. His presentation was a Word document, and he presented by scrolling down. For bonus points you could do the same with `less`.
Yeah I've met plenty of talented people who are terrible at presenting their work. I've often thought such people would benefit from a partner, someone understands the value of the work but is better at channelling it to the world. Like a producer is to a musician.
you probably can do images with vim, either rendered as colored ascii or with some third party software such as w3m (text based web browser that can render images in the terminal)