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Nixon in 1971 stopped everyone from having the right to convert their gold to fiat. Isn't that stealing?

AFAIK,Nixon stopped gold/USD trading at the fixed price of 35USD per troy ounce and imposed limitations of gold ownership.Those limitations were temporary.
The US gold standard was dumped,because there was a high level of inflation in the US in the early 70s and the Federal reserve didn't have enough gold to cover all the gold purchase orders coming from around the world.

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The limitation on gold ownership in the United States was repealed after President Gerald Ford signed a bill legalizing private ownership of gold coins, bars, and certificates by an Act of Congress, codified in Pub. L. 93–373, which went into effect December 31, 1974.

Thinking that Bitcoin is "more real" than the money in the bank seems kinda wrong.
Are the Bitcoins that you keep in an online wallet or a cryptocurrency exchange "more real" than the fiat money in a bank account?Nope,I don't think so.A crypto exchange can steal your coins or go bankrupt.
Bitcoin is "more real" than bank deposits only if you keep your BTC in your cold wallet and you keep your private keys in a safe place.