We need to keep in mind this is close to impossible, we need to trust only one thing: the code
It's open source and was checked many many times, it's robust. But you should not think a supply bug or exploit is impossible on public ledger like Bitcoin, it's possible and happened in the early days, it's was on some blockchain too and it took years to discover, maybe there is actually one glitch on Bitcoin and we don't know, maybe someone will find it or maybe not. After 10 years of battle-testing, If someone find a way to create fake Monero, this deserve respect ^^