"also whats wrong with having a FI rating on your CV to look good, it shows to people interviewing you that not only have you attained the qualification of CPL you have also gone a step further in your flying skills and continued training to a higher level even if you dont use it or maybe even just teach friends for free to get there wings as this game is not affordable to everyone and so anything you can do to promote general aviation in this country is a bonus!!!"
If anything has proved the folly of allowing unprincipled 'hours builders' to instruct, your post has. You clearly have no real understanding of the standards required of a halfway decent FI.
An unused FI rating on a CV merely shows that you lacked any application to use the qualification and were more interested in 'ticks in boxes' than applying your Rating. Also, it will have a less-than-zero effect on any airline HR people who might grant you an interview.
Do remember that roughly half of the current 'hours-builders' will never be acceptable to airline employers.