We questioned how many of them would be diagnosed with 'issues' nowadays where as they were just brought up without boundaries
Parenting does not cause autism, ADHD, dyslexia, dyspraxia, or any other SN. It is not down to lack of boundaries.
Then there are the remainder who she described as poorly behaved, sometimes little parental control who inform the school the child is autistic etc...but when asked about diagnosis, they are self diagnosed by parents and not by a doctor
Then they won't be getting any SEN support in school because even with a diagnosis it can be difficult to get the right support in place. Some of these children who are "self-diagnosed" will be on the assessment pathway and simply don't have the bit of paper that confirms a diagnosis, waiting lists are long and by long I mean years in some cases during which you have an undiagnosed, unsupported child whose difficulties don't vanish just because they haven't got that but of paper yet.
If you had any idea of what it's like to have a child with SN, or to have SN yourself, any notion about the assessment process and any clue about having to fight for support then your realise no one goes through it for the fun of it or because they need a handy excuse for shoddy parenting. People who are faking it tend to be weeded out early on in the process and even when you get through all of the assessments there is a minimum threshold for diagnosis so you're still not guaranteed to get one.
The problem @Clymene is people like yourself who won't tolerate open discussion and thought and want to shut it down
No, people like you and your ignorance of children with SN and disabilities are the problem.