That isn't a meaningful response. The Curse of Flesh facilitated assimilation by subverting Titan directives. This does not apply to Faceless minions. Additionally, mortality/The Curse of Flesh is almost the exact opposite of the Faceless "hollow husk" idea: "it gave rise to mortal qualities of necessity: courage, resolve, and heroism" per Chronicles. They became individual people, and that left them vulnerable to corruption. Are Faceless husks or people?
And at any rate, I'm not arguing word choice. Call it assimilation, mind control, corruption, whatever, the Curse of Flesh is still a wholly different scenario from assimilating other Old God minions. We already know Old Gods corrupt, so it's not like this assimilation process is a big revelation either.