OP- I’m sorry you have had a hard time here. I think perhaps you have stumbled blindly into room of parents whose children DO have autism, and used the terminology of someone with no experience of it. That way of speaking is really hard for us to hear, because we would rather other people don’t think of our children like that, but actually we know they do. (Or that’s how I feel- I can’t speak for others).
I don’t know if your daughter has autism. I completely understand that you are fearful that she does. I wish my autistic dc were not autistic- their lives would be so much easier (and frankly so would mine). But if she turns out to be, then it is likely that you will also develop the fierce reaction that you have experienced to some of the terminology you have used.
Some within the asd community will tell you it is not a disability, but I think this undermines the struggles individuals and carers with greater needs. Frankly, I think it would be massively offensive for me to compare the difficulties my kids face with those who require 2:1 support and who cannot effectively communicate etc.
If your daughter does have Asd, she will need your support. Possibly do some research into how Asd affects girls- it is often different to boys and can present in a far more internalised way. Hopefully it won’t turn out to be relevant to you, but it cannot hurt.
Also if possible, try not to take from this that Asd parents are unpleasant, but try to understand how we are constantly having to defend against the negative opinions of others, when we often have so much else to deal with.
Good luck