The question is not whether saying "aks" at a job interview will get me a job or not today but whether "aks" will be the way just about everyone says it in another 50 to 100 years. One can get away with saying plenty of things (including plenty of things people are complaining about in this thread) in job interviews, especially if the person interviewing you is under 40 or 50, that you wouldn't have gotten away with decades ago. Like I said, language changes.
And let's not forget that we have a man who was elected president, twice, who can't seem to pronounce "nuclear" properly.
You are misconstruing the fluidity of the language with the propriety. "Axe" may be proper in 50 years, but I doubt it will be even in 25. On the other hand, "fax" came into the vernacular relatively recently, and most definitely will be obsolete in 25 years.