I understand and agree with where
@joeylittle is coming from, re: just talking too much and sharing too much, but I also really appreciate
@Friday's point re: the ADA. Since I work with adult college students with disabilities, I'm big on "de-stigmatizing" even the word disability. I think that if the supe is really formal, and she has had this kind of conversation with other employees who mentioned something non-disability-related (but not otherwise flagrantly inappropriate like intimate bodily functions or sex), then cool, she's applying her standards to everyone. But there is no way to know that, since likely she would have had those conversations one-on-one.
For some people, having a learning disability is deeply personal, and sadly, a source of shame. For others, it's a non-issue. If I had been at the meeting and said, in response to a question a new employee was asking, "Oh, I take my calls *this* way, because I have ADHD and just can't type and talk at the same time," I do not think there is anything wrong with that. It was offered in the interest of furthering peer-to-peer learning and best practices. Personally, I would be *highly* offended by the supe's comment to me. I think her response is out of proportion to the disclosure and the context in which it was given. The more people who "come out of the disability closet," the more folks will recognize that disabilities of all types are just part of the human condition and lifespan, and the less stigma and shame others will feel. You may well have made someone else feel less alone by your comment, AND given them a helpful hint, to boot!
Since I used the word "disability closet," sexual orientation is another analogy to consider. Straight people talk about their spouses in casual conversation, and that is generally not seen as unnecessarily sharing personal information. But for a long time well-meaning straight people would say, "Well, I don't think there's anything wrong with being gay, but do you have to make a point of telling people? It's no one's business." There's a difference between saying, "Well, I'm a lesbian, and because of that ..." all out of context to the conversation, and just casually mentioning my wife (which outs me as a lesbian), as say, part of a conversation about what we all did over the weekend. I don't know if this analogy is quite on point, but I think there is overlap with the "not readily apparent" nature of some disabilities and sexual orientation, societal stigma, and internalized shame.
I, for one, applaud you for mentioning it with aplomb and little fanfair ... just another fact of life and arguably relevant. :) Just my $.02