I guess to "each his own", we admire his creation and some of us could have been using his OS before it's not as vulnerable to malwares and viruses that can steal our crypto. But that's it, if he doesn't believed in crypto then we can't really do anything about it.
He built it up and people can use the OS but is the OS only for Bitcoin and cryptocurrency users, no.
Linux is like the OS for OPSEC people, not normal people who are more familiar with Windows or MacOs. We don't need him to be a Bitcoin or cryptocurrency supporter to have a good and secure OS to use.
He could be right, or he could be wrong to see crypto as Ponzi schemes as this is really the argument that others have been putting since the beginning. However, he could be in the majority specially that Bitcoin has been carving it's name and he could be left in the closet in the next decade or so, just saying.
He is partially right, if saying about cryptocurrency or altcoins because many Ponzi scam projects use altcoins as their tools. Even Bitcoin is not exception but the difference is Bitcoin is Bitcoin, was not built for Ponzi but any group of scammers want to abuse it for their Ponzi scams, how to prevent it?
No way rather than education to enlighten people about Ponzi scheme.
Ponzi exists many years before Bitcoin genesis block and Ponzi scammers can use other traditional systems like banks, stocks, ventures capital for their scam too.