By the EXACT same logic
you cant trust ECDSA to ensure that only your private keys can spend your utxos.
But you do.
Your whole argument is just
"I trust Team Bitcoin when they say ECDSA is secure.
But I don't trust Team Monero when they say range proofs are secure.
I don't DYOR.
I don't verify.
I just follow the prevalent groupthink of the team I like."
Frankly, you're a sorryass Bitcoiner.