Is “P2P ecash” made of wood? Glass? No, it is made of bits of data. Fundamentally, the Bitcoin blockchain is data. It represents financial transactions, contracts, identity, and unfortunately, spam.
Being made of data, there is no way to police what every bit of data represents at a macro level, in the external world. Proof of this is here, if you care about the truth.
https://www.bitmex.com/blog/the-unstoppable-jpg-in-private-keys