No, but it said a lot about it.
No, it didn't, and this is leading me to believe you probably glanced over it unless you prove otherwise other than a now-vanished population of Morrowind. The subject was completely about shifting demographics of Nedic popuations in northern Tamriel and Cyrodiil, and it barely mentioned Morrowind at all.
It's not entirely impossible there were men in Morrowind before the Elves. There are/were lots of Mannish races that aren't playable or represented by NPCs in any of the games for whatever reason, like those silvery skinned fellows from Argonia mentioned in 2920. And all the enslaved races of men the Ayleids had captured, which were assimilated into Imperial culture and eventually blended into either Colovian or Nibenese bloodlines.
Argonia was an extension of an Ayleid empire. Cities like Gideon were originally built by the Ayleids, and it wouldn't be unremarkable that the last remnants of pre-Alessian Cyrodiil stayed in Black Marsh as represented by tribes like the silver-skinned Kothringi.
If there were men in Morrowind, it's possible they were of Nordic descent. Didn't the Nords own part of what is now Morrowind at several points in the past?
The men Frontier, Conquest, and Accommodation refer to aren't the same people as the Nordic conquerors of the first Empire. They were akin to the tribes in Cyrodiil, Hammerfell, and High Rock, and thus were forced to accommodate to an elven population that were still the ruling majority in the continent. The Nords weren't making concessions.