It sounds more like you just made an overly simplistic interpretation of their statement, "everything works like I think it should," since it's clear from their post that they recognize the difference between some basic level of "working" and a well-engineered system.

Hopefully you aren't discouraged by this, observationist, pretty clear hansmayer is just taking potshots. Your first paragraph could very well have been written by a professional SWE who understood what level of robustness was required given the constraints of the specific scenario in which the software was being developed.