OneNote's PDF support isn't really for PDFs, though. It just literally prints the PDF as images onto a OneNote page and OCRs it. Makes for a really heavy page and none of the normal PDF amenities like doing highlighting within the file itself.
I guess expecting consistency from the org with 3+ mutually incompatible video call apps and 5 volume control panels was always a fool's errand, though.
Is it? As far as I can tell, Chrome just has a plain PDF viewer with none of the annotation/highlighting/commenting/read-aloud features that Edge has.