Yes, it’s a meta-joke inspired by the funny unit of size used in that article and on the fact that it is even more opaque to Europeans, which have even less of a feeling what that actually means.

Also, the format is a pretty common standard template (“xxx or something - no idea I’m yyy”), which is very popular in Germany, but I am not quite sure it is also a thing internationally…

And yes, I am also now graving for one of those delicious Pickup choco biscuits! :-)