It’s been almost a year and it still works fine. I even set it up as a dev account to sideload apps and make calls to the wit.ai api in a few projects.
It depends on how much you share that account, is my point. While internet randos using it would obfuscate any one persons activity, I am not sure how it would work in practice. Maybe you are already sharing it with a dozen other people? I dunno. Security bots tend to clamp that kind of thing unless Meta really gives zero fucks.