Known and vetted systems are always the most secure. Until RSA is broken, and then they'll need to update to a quantum resilient standard. Which we've had in the wild for 6 years already and the NIST has officially approved for 2 years.
We're still at least a decade away from a machine with enough qbits to do it. So i feel like we should be fine.
It's the fucking Credit Bureaus, Telecoms, and Energy Companies I worry about. They keep fucking up.