That's not the point. I have no doubt that the people at Apple are able to solve these issues. I think a lot of people on HN are able to propose solutions to many of these issues.

The point OP was making is that they have probably did their due diligence and subsequently decided that it ain't worth doing.

Oh for sure. I also imagine it depends on which team proposed it. If it’s the Finder team it might not occur to them to offload it to the file system team because it’s a fancy add on, not a system level thing. I have never used this feature but might give it a go. Having all the PDF files in one place could actually be fairly useful. Could also be nice to combine this with my Dropbox photography workflow.