It isn't that at all. I've worked in the field and taken plenty of calls from guys like this. Guys who thought, yeah, I know just enough to be dangerous, let's see what I can do. Then he's sitting there, no backups, no duplication of media, nothing to keep his ass out of the frying pan, and then he's on the phone to me because he's got some hot project that he needs the system for and it suddenly becomes my priority to unfuck the mess he's in.
Either way, he should call the pro. It's cheaper if he calls before he fucks everything up beyond belief.
You non-science, non-engineering types, especially in IT, love to exaggerate and use pontificating language. You clearly don't mean "fucks everything up beyond belief" because it's a meaningless phrase that you picked up from your stupid colleagues in IT. "nothing to keep his ass out of the frying pan" -- is that really necessary? Get to the point and move on.
How hard are backups? rsync, RAID, different storage media, onsite and offsite backups, and cost / benefit analysis to defend the choices. Some of it will be subjective (the "benefit" of something is obviously difficult to gauge and liable to debate). You could suggest some points of reference. That's what every good scientist and every good engineer I've met does -- because they know their worth is not limited to learning some quirks about programs. They design and build stuff. They often debug it. The bad ones constantly overstate their worth and present themselves with a really irritating know-it-all attitude. The bad ones think that by communicating their ideas and helping others out, they are risking job security. The good ones help others learn how to learn. The good ones demonstrate that they know their stuff and understand their worth is not rooted just in knowledge or wisdom, but also in interpersonal skills, often overlooked or downplayed in STEM fields.
I used to be like you in high school. I had worked at a few Fortune 100 companies as a coder / sysadmin type and I didn't realize my douchiness until I left the field in college for computer science, electrical engineering, physics, and chemistry. I know my comments sound a bit harsh, but maybe my tone may make you reevaluate how you behave.