Exactly. The exact opposite of the people flogging internet widgets running on a bunch of AWS instances running Arch/Ubuntu/Cheap distro of the week. Unfortunately that contingent is massively over-represented here on HN.
That post fails to mention Capital One's move from IBM mainframes to AWS was one of the reasons they suffered one of the largest data breaches in history.
I work in banking. We provide modern solutions for small local banks in the US. That's how our core runs. It's just Java apps (Spring Boot, Jakarta EE) running in the cloud.