Yeah, PowerPoint is made for "business presentations", and its auto-alignment makes it useful for layout tasks like e.g. Adobe Illustrator replacement, plus it has some picture editing features though ofc nowhere close to Photoshop (or gimp, or ImageMagic, etc.), plus its presentation mode is good e.g. like Acrobat but far easier to use iirc.

But it's definitely of the WYSIWYG class, whereas for math I believe you want LaTeX, at which point it's probably easier to just do the layout from within that than to take pictures of the formulas and present from within PowerPoint.

PowerPoint can be a nice tool for many, but not for that purpose, agreed.