Thinking like this is what leads to tens of thousands of Mongo databases being exposed online.

Anyone can follow a "how to install X" guide and install a few packages and get a working config to get going and then automate it with their tool of choice but that doesn't come anywhere close to a production ready system.

When your job focus is shipping product that's all you care about, get it out the door as fast as possible so why learn anything more than the bare minimum?