The thing I don't get about crypto, please explain.

BitcoinBitcoin
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self.Bitcoin
This is the thing I don't get about crypto many vidiobloggers praise. "Trad money could be printed into infinity and lose all their value cause inflation, while crypto has a finite number of coins". Well cool but if we can split that coin into an infinite fraction of a coin and still be able to make transactions with them - isn't it the same thing. What am I misunderstanding here?