Ladies & Gentlemen,
Don't knock the use of post nominal letters!
If one looks at any of the social media things such as 'Linkedin', one finds an almost unimaginable list of claimed achievements and experience, which when interpreted into everyday language, actually means nothing too grand.
It used to be claimed that members of the armed forces frequently 'undersold' themselves when applying for jobs or comparing themselves with their civilian counterparts. Some online CVs certainly lay that particular ghost.
Like so much else it's mostly a load of spherical objects!
Old Duffer (BA Bombay failed)