its not a pyramid scheme for two reasons

1. by holding X amount of sats on a address you control and thus own, it does not involve you getting subsequent income from recruiting people who buy coin below you EG you dont get y% of other peoples sales

2. there is no hierarchy of coin owners whom rank different income value depending on rank

as for is bitcoin a asset:
it is an asset as it is not based on debt(liability vs asset),
the point of having addresses that follow rules of transfer control based on a secret key used to sign the transfer means there is ownership proof that only the secret key owner can sign for. so its not just a unit of measure database, its a ledger of proof of ownership

jamesNZ still does not understand how crypto currencies work as he just thinks its a database of numbers. he does not understand the concepts that the ledger includes the transfer and ownership proofs