I don't see how number of diagnosed "dilutes" it. Whether or not people take it seriously has little to do with frequency - I mean, it's now something like 1 in 3 or similar will get cancer in their lifetime, even those with good survival rates are seen as serious and FASD is the most common preventable form of brain damage in kids and it isn't taken seriously by most at all.
I'm not sure if it's thrown around 'too easily' and with the difficulties in access to mental health help, I have more sympathy than anything with those who see that list of symptoms and see themselves in it, but I dislike much of the language around it, particularly the post in post traumatic stress disorder.
This has been discussed by those who work in war zones and with those in abuse situations - it's a very niche, pretty Western idea that people can only discuss trauma /after/ it's all over. That's bullshit and kinda patronizing to have a professional call it PTSD, it feels like it's ignoring the on-going issues. Children who are abused display signs of and some can discuss their trauma dysregulation just fine and deserve better, same with those who've lived decades in war zones. It's also weird that a large complaint about the number using that language is how limited resources are - that's a resource issue that's not going to change anything about how many deal with it.
I'm on the side of the latter professionals in the article - I actually think if we move away from pathologizing/it all needs to be so serious and we talk about it the same way I talk about kids getting emotionally dysregulated - whether or not they have any diagnosis - we could discuss the range from normal reaction to the less healthy, hindering response without having to get into who has the right to talk about their trauma without somehow causing issues for other people. My being diagnosed as a kid only means I had that access that so many don't, in a school district that had the space and time and other resources for the hurt kid I was that many schools don't have.
Yes, long-term trauma dysregulation is not a universal reaction, there is a lot of writing on potential genetic disposition as well as the supportive factors that can ameliorate the likelihood of long-term trauma dysregulation. That's why the diagnostic criteria involves a time frame and for Complex, involves number of events. It's also not a lifetime diagnosis for all, mine has significantly improved by being in a better environment, with the right support and therapeutic care, and in reframing it. I still have bad days, but whether I'd still qualify for official diagnosis - I don't know. Don't really care. I've survived this long with the shite in my head, and I can't see how I'm harming anyone when I discuss that I live with regular trauma dysregulation as a child abuse survivor.