... oversimplified and omits the complexities of the issue.
The problem is not powerpoint. The problem is most people not being able to condense and simplify information, or structure it in a way which tells a coherent story in small chunks, using the presentation as a minimalistic tool. They have no clue how a meeting should be run or the role of a presentation in a meeting, plus they are afraid of forgetting any information or talking without a script, so you end up with these massive overloaded slide packs with presenters basically reading most of the slides. Which goes on for a while until someone more senior in the meeting gets fed up, takes control and hijacks the meeting.
Another place where people fail is being too attached to their presentation, in the sense of "I made this thing so I must go through it from start to finish". If the meeting takes another direction, e.g. because the person you are meeting suddenly changed their priorities, (much of) the material may no longer be relevant. Or starting to run out of time, and still trying to go through everything instead of skipping to the key slides.
Powerpoint is a decent tool. If anything should be banned, it is probably the monopoly it has been allowed to achieve. Having the whole business world essentially running their meetings on one piece of software from one single vendor, is not good. Powerpoint as a tool could be improved, and businesses should be able to run without paying the MS tax because business partners keep insisting on sending or receiving