I know that many bitcoin enthusiasts are big Linux advocates. In order to stay consistent maybe they need to switch operating systems. That's what I would do
I do not mind what other people's thought about Bitcoin. Everyone has their own belief, if we let ourselves got affected by other people's belief, it will be hard for us to live in peace since we have to adjust and react to what they are thinking. My thought about Bitcoin is established and was already proven for years, so this kind of statement does not affect me much.
So, if the Linux inventor says he does not believe in crypto then let him be, if ever, he will be the one missing out on the great opportunity Bitcoin brings.
If Bitcoin being a free market is a Ponzi scheme, what about those assets controlled and manipulated by larger companies and institutions?
If someone comes to you and tells you that your wife is bad and untrustworthy, you should leave her. Would you leave her when you're the one who lives with your wife and knows her better than anyone else, and you don't even know who the other person is? This sounds ridiculous, right?
Likewise, is Bitcoin good or bad, is it a scam, ponzi or not? We can research and evaluate for ourselves, why would we change our opinion just because someone is impacting us with their distorted thinking?
I don't know how long the Linux inventor has known and learned about bitcoin, but I have been involved in the market for many years and spent a lot of time researching bitcoin. I am confident in my knowledge and choices, there is no reason I should care about what others say.