There's a lot more that goes into doing a job than just the physical possibility. In the context of programming there's maintainability, developer time spent and a million other factors. The blub argument, specifically the part about 'looking up', is quite literally talking about you.
Besides, that's not what you're saying. Your comment was pretty well flat out saying functional programming is useless and people only do it to look smart. That, clearly, is a load of crap.