This is a simplistic, yet common take. Privacy is not a zero-sum game. If it was, entities that valued your information wouldn't construct systems to constantly scrape it from you.
As long as you engage with society you will always be generating new information, even it's as basic as confirming that old information is still correct. That means it's never too late to adopt privacy practices.
This is extremely valuable, thanks for this!
As a general question, why did you decide to use a single postgres container for multiple services instead of multiple, stack specific containers? When I first started working with containers I considered your scheme for the sake of minimalism, but didn't want a single container to bring down multiple unrelated services. I also had the resources to accomodate the redundancy.