History is written by the... victors. It's not surprising to get a single-sided story when the other side didn't care much about leaving written detailed records.
Burning down the libraries in not something unheard of.
It all depends on your point of view. If you look over the last millennia, the Huns didn't leave a lot of legacy beyond finishing off the corpse of Western Roman Empire, which wasn't really an empire then anyway. Their culture was absorbed and we only know of them because of that.
End of the day, they were ultimately just another band of warlords.
https://en.wikipedia.org/wiki/Battle_of_the_Catalaunian_Plai...
However, all the "alternative" history I've looked at has ended up being fan fiction, with no real supporting evidence.
This applies to https://news.ycombinator.com/item?id=13940423 too.