I think it's an artifact of (1) being an all-day-meeting-person, and (2) the majority of work-product being present in PPT form.

(1): Taking notes in PowerPoint is sensible if you want an entire conference room to be able to read the notes, as they are being taken, from their seats, and without any fuss about font sizes and so on.

(2): Additionally, since the final "product" will be a PPT, having the notes already in a PPT file means you get to skip some copy/paste steps.

It's still a bit silly and a bit of a cargo cult in the online-first world, but I get how it happens.

> Not OneNote, not Word, not even freakin' Notepad.

Hey, I'll take PPT brain damage over the even worse brain damage that causes some orgs to do everything in a buggy ass Salesforce version of google docs... give me MBA brain-rot bullet points over MBA brain-rot fancy versions of five paragraph essays any god damn day...