Done my PPL and deciding my next option, my instructor says it will hinder my chances of getting a job if I don't complete my IMC before it is de-funked
A job doing what?
Although it has been a useful add on to a PPL for many years, if you are referring to an airline pilot vacancy, it simply won't have any relevance. By the time this becomes an issue you will already have completed an Instrument rating.
Of course, that isn't to suggest that any form of advanced training including the IMC rating (for as long as it exists,) isn't a valuable use of your time and resources. There are aspects of it that will assist you in your full instrument rating course.