Bitcoin is not a scam. If you want to regard bitcoin as a scam, fiat are scam.
I didn't say it is a scam, I said that due to the fact that most people buy bitcoin as an investment and not as a currency to use, it is like a pyramidal scheme.
By the way, why do you think fiat currencies are scams?
In pyramidal scheme, new investors will lose. Bitcoin always get to ATH. Also compare bitcoin to gold and other assets, not pyramidal scheme.
That's not true. In a pyramidal scheme, the profits of old users are directly generated by the incoming money of new investors. it doesn't necessary mean new investors lose; it means that after some point, the whole thing will collapse, and then they will.
Miners use energy and pay for the energy to mine an asset that its value increases. Electricity companies gain from it while also bitcoin miners gain from it. How is it a waste? Something useful that brings food to the table a waste? So the electricity that those other industries used for production are waste? You need a lot to learn.
This is nonsense, because that energy could go to things way more important than mining bitcoin, like feeding hungry people, or warming their houses in the winter. Overall, the energy is wasted because it is used to accomplish something that can be accomplished without that heavy used of energy, hence it is wasted.