Years ago, kids were labelled "odd" and ostracised at school without knowing why. The response to them tended to be things like "she makes herself a target" and "he doesn't do himself any favours, does he?" The onus was on ND children to change themselves to "fit in" (with the result that those capable of it would make huge efforts to mask at a big personal cost to themselves and those who couldn't mask would just be left to sink), rather than on those surrounding them to understand that this was just how they functioned.
I have ADHD. At school, I was bright and achieved well academically but had problems with focus and was significantly less mature than my peers in some respects. I have spent a large chunk of my life fighting against the way my brain works (visual, need frequent sensory input, starting tasks can be near impossible, terrible short term memory) and as a result have made some dreadful life decisions, particularly in my work life, which culminated in complete burnout during COVID and having to stop work altogether (I'm now doing something different part-time). Things have now turned a corner for me in some respects and I'm managing to hold it together much better as a parent and as an employee because I'm finding ways to work with my brain, not against it. Knowing why some things are harder for me than for other people and researching and planning workarounds makes life much easier.
It is likely that my eldest DC also has ADHD, from what I've observed, although he's coping so we haven't yet pursued a diagnosis. And as a result, we're able to put strategies in place to help him cope better with home and school life - visual reminders for chores, clear and immediate structured rewards, learning spellings in the bath where the hot water helps him concentrate and doing homework on the bus or train where, again, the motion and background noise seem to help him concentrate. And being aware in teaching boundaries and social skills that he may be behind his peers in some respects and need strategies to compensate. Factoring plenty of time into the weekend for physical exercise and down time, rather than trying to cram in too many things.
It's not about expecting "help" or "support" in this house, it's about recognising why we find things difficult and putting strategies in place to help cope and to overcome our difficulties. It's also about not putting ourselves in situations where we can't cope - I won't go back to doing a full-time sedentary office job which requires excellent executive function skills because, quite frankly, my brain shuts down and I'm shit at it. Likewise, I won't be sending my DC to an ultra-modern, super-strict academy for secondary, without outside space, grass and trees, because the strict rules, uncomfortable uniform and lack of sensory input would be a disaster for him.