There are some good points raised here one's well worth remembering in many scenarios be it to investors, colleagues or academic Peers. The best preseners I've seen almost never use PowerPoint.
The second best PowerPoint tip I've ever heard was "Don't use PowerPoint." The best was to get the rest of the presentation ready, and do the PowerPoint deck last. This forces you to actually make a decent presentation, and use PowerPoint as an aid, as opposed to making a good slide deck and fitting the presentation to it.
The problem is exactly the same as in programming or, really, everything else: people focus too much on the tools, and not enough on the task.