From what I have determined, a recent update (likely 25.1 on Windows 11) made the read out loud function easier to access but broke its functionality. Now, all of my pdfs regardless of whether they are a scan, PDF/A standard compliant, or gone under OCR are read by Adobe Acrobat read out loud as "Empty Page." It is clear from the edit mode and when converting to word that Acrobat recognizes characters and words but when activating read out loud, none of that information seems to be processed.