This is about unprivileged users - privileged ones can see everything. The idea is to make figuring out what's the surface of the attack harder (for those attackers who are less than skilled) by making it less obvious that 10 years old game server process is running on this OS.
I think the point here is that free beats easy peasy, especially when learning a new skill, where your easy peasy isn't their easy peasy. And getting something up and running on Oracle Cloud with Terraform is nowhere near easy peasy for someone who never did anything with Terraform ;)
You can submerge recent iPhones completely in water for few years now. Every year I make some quite fun and surprisingly looking underwater pictures with mine, that's just fine afterwards given I'm still able to write this comment on it.