Just commenting here so that I can find back to this comment later. You perfectly captured the AI hype in one small paragraph.
If you already have a high optimized pipeline built yesterday, then sure keep using it.
But if you start dealing with PDF today, just use Gemini. Use the most human readable formats you can find because we know AI will be optimized on understanding that. Don't even think about "stitching XML files" blahblah.