I find that quite surprising, maybe I'm completely wrong.
I've always read in it's entirety anything written specifically to me, and I expect the same from others whenever I write. I would not conclude that I knew anything of the author's intent until I'd finished reading, and will sometimes read it more than once to be sure. I'm not always sure I know even then but that is a bit unusual.
By the end of that (which you're apparently not sending and probably for good reason) I would see that it's not about how I have failed, it's about your needs, and you sharing your needs is a positive thing in my book.
I don't consider something confrontational unless it contains unnecessary insults or belabours a negative point excessively. It seems to me that the airing of a contrary opinion is simply sharing if it is done without disrespect for me personally. When a person avoids airing contrary opinions simply because they're contrary to my opinions that seems to me a lack of trust and the beginning of a breakdown in communication. I had thought this an aspie trait, but then maybe I'm still weird, even among other aspies. It's only in the last year that I've become aware that I'm on the spectrum so this is quite possible.
I must admit that I don't fully understand the 'clingy' thing, I am aware that others see it as a bad thing, it has to do with being excessively friendly and I suspect that it may be related to 'trying too hard' - another thing I don't fully understand. If I attempt to correct my behaviour such that I'm no longer 'trying too hard' is that not the result of further effort and thus evidence that I'm trying even harder? Perhaps it's something that's obvious to me but I draw the lines in different places than do most people, whenever I hear about these things people seem to think that everyone knows exactly what is meant and specifics are rarely given.
