[onwardly]

I'll just say that design quality of presentations, especially for startups who need credibility, is extremely important. Powerpoint- while it doesn't do it for you- is the easiest way to look credible without doing all of your slides in Adobe software.

For internal company presentations, perhaps it doesn't make sense to do fancy powerpoints. But if you can't make a presentation that looks credible, it betrays confidence in your ability to deliver on a product/service that is legitimate.

[KC8ZKF]

In other words, salesmanship versus communication. See Tufte & al.