To be clear, this isn’t a failing of the software per se. PowerPoint is powerful and lets you do a lot of stuff, but I took desktop publishing lessons in high school, and I’m a bit obsessive to start with. I just have to have everything lined up and evenly spaced and just so. Which PowerPoint lets you do easily enough, but then you need to add another box to your diagram... and resize and reposition everything more or less manually.
Similar story for Word, which almost lets you do professional(ish) documents once you know where all the typesetting options are hidden. I’ve given up on Word for technical documents and now use Markdown + pandoc to convert to Latex and then pdf.