No copy, no mod things and attachments

Why can't I put no copy, no mod (I think it might be all no copy items, I've not tested it fully) into an attachment whilst it's attached by any means?

The owner isn't changing. I can take the object off, load them in, then rewear it so it's not that I can't load no copy, no modify items into an object and then attach it.

I even tried scripting it, and generated a new (for me) script error, "Cannot give inventory, permissions blocking" so it's obviously deliberate, but why is it there? If there's not a good reason, can it be added to the BLOTTD sometime for a tweak pretty please?

I'll ask about this--I remember wondering about it a long time ago (/54/c5/34048/1.html).