Also, notably most banks will do SEPA transfers for free. There's nothing inherent in money which would make the action of moving it force giving a fraction of it to some other entity.
Indeed, the only disagreement I am aware of is whether the scam being run by multiple entities ("miners") is a significant difference to a Ponzi and so it's a new kind of scam (suggested name: "Nakamoto scheme") or the difference is aking to an LCD vs CRT TV, nothing significant and it's just a Ponzi. But the fact it is a scam is an indisputable and rather simple mathematical fact.
To quote Preston Byrne who coined the phrase Nakamoto scheme:
> The Nakamoto Scheme is an automated hybrid of a Ponzi scheme and a pyramid scheme which has, from the perspective of operating a criminal enterprise, the strengths of both and (currently) the weaknesses of neither.