I think the point was that although there maybe technology that will be able to read the media, the media may well have lost its capacity to store the data. CDs fade, and if all you have is a really retro cup matt, then all you have is that, no data. Even though you could build the device to read it if it was new.

Sadly we have to put up with people's incessant babbling IRL anyway!

I've got no problem with them banning them for courtesy reasons, it's just when they cite "science" and don't really mean it.