Comment on Why are the Middle Ages Slandered as 'The Dark Ages'?

I posted this video, from Real Crusades History, yesterday. I then shared it on several mediæval history groups on Facebook. On those it garnered several comments discussing the term 'dark ages'. What  follows is one of them that I wish I had written as an introduction, especially the last paragraph!:

The "dark ages" can be correctly applied to the period after the fall of Rome - people stopped writing, vast amounts of knowledge was lost and cities were abandoned, to be replaced by the brute barbarism of migrationist northern tribes.

However the actual slander starts as soon as that period ends, which didn't take long, and is usually streaked right to the start of the renaissance.

It's a term put together and popularised by black legend mongers and champions of the "enlightenment", as well as protestant headbangers who to this day try to justify their ruinous schism from the faith that invented hospitals and universities while Islam was trying to figure out the optimal number of women per square donkey length in a hareem.