I'm not sure what point you are trying to make here since the article references cryptocurrency once. And you do know that there are regulated cryptocurrency exchanges, right?
Prometheus as a monitoring tool is definitely a lot more complex and does not 'just work' straight out of the box. You need to configure Prometheus to know where to scrape using service discovery, set up different agents on your hosts to export metrics, build graphs in Grafana using PromQL to look for specific labels, and create alerts Alert Manager for every alert you want to receive.
It is easier than ever to deploy software on a small scale. It sounds like your security team is failing to provide a suitable platform and you chose the wrong cloud provider for sending email.
Interesting that this thread seems to attribute a lot of the early AWS decisions directly to Jeff Bezos when everything I've read before indicates it was a collaborative effort including Andy Jassy. https://techcrunch.com/2016/07/02/andy-jassys-brief-history-...