This is just kind of a vent and also a warning - the ODD label can be very harmful if it's not really true
Definetely get what you mean here. I was misdiagnosed myself as well when I was in a clinic specializing at observation rather than actual therapy. My anxiety and distrust prevented me from being able to open up to the ST. They only saw my ''rebelious'' rulebreaking and stubborn behaviour with some misunderstandings that could have been preceived as ''agressive'' and easily frustrated/irritated without knowing the actual causes. Also probably because I basically had problems admitting having certain problem's because I did not want to burden my parent's with this knowledge and was very suspicious that they would discuss everything with each other behind my back. And the fact my mind isn't that helpfull when question's aren't specified and even older thoughts are misinterpretated with newer ones and disrupt the cognitive organization.
I indeed experienced this misdiagnosis to be harmfull as it actualy messed with my self perception and conflicting inner dialogue. Also created more confusion which resulted in more lack of understanding for my own mind, which is difficult since I'd always felt misunderstood as a child, let alone to be misunderstood by myself in such a degree (more than I'd normally do)
Luckely I'm at a clinic that can help me more now, at least with diagnosing me correctly.
Anyways, sorry if I got off-topic with this response.. Just want to let you know you're not alone in this. They should be more carefull diagnosing people.