I left 4 years ago and earn almost double what I did in the military, so I would partially disagree with that statement. I would agree with those posting that it is more of an advantage when applying to foreign companies than those in the UK.
In the UK, many employers seem to cling to the belief that anyone leaving the military will be damn grateful for a job and happily work for the minimum wage. UK employers also have a habit of asking for the moon on a stick in a puzzling JD, then either backtracking or offering 20K. This is especially true of sub-contractors who seem to repeatedly underestimate the cost of labour when pricing a bid.
I also chuckle when I read some of the posts on Linkedin as within the UK 'leadership' seems to have fallen into the HR domain, and many 30 year old HR managers are keen to share their thoughts on leadership and inspiring people.