I don't share anything about my DD on social media that would identify her - not photographs, not videos, and definitely nothing under either of our names talking about her specific difficulties (I've shared a few issues on here anonymously - that's it). And no photos or videos of her online was a decision my partner and I made when she was born, years before she was diagnosed, and we were considered extremely odd and a little bit snobby for making that decision.
But I can absolutely see why someone might want to share things about their child in this way, because it is so hard to be heard with professionals and social media for some parents (mostly mothers) is the validating, comforting, listening ear that is so lacking in the coldness or frank disbelief that you sometimes encounter elsewhere.
Add to that (in respect of the ASD parents sharing) that autistic communication is not to listen to someone else's struggles and say, uselessly, "oh that must be hard" - but instead to say "I experience that too" and to give examples - so the "stitch" format on short form videos is one which lends itself to autistic communication, and apples don't always fall far from trees.
I am also grateful to some of the parents who do share. There are many but to give just one example, the account "ASD with a G&T" has been really helpful to me in providing a name for children like mine who are too capable for special school but not able to cope at mainstream (she calls them the SEN-betweeners). A number of the ARFID parents social media accounts have been extremely helpful too.
Then throw into the mix that the people who are trying to deal with school communication, school refusal, EHCP applications, DLA applications, maintaining family life around an "explosive" child, not burning bridges with the school parents or the wider family, against a societal and sometimes even familial backdrop of cynicism - those people are almost all women.
I think there is a naivety, and a certain sexism, behind writing off those who do choose to share as undignified gold-diggers. Do I share, no, but would I condemn those who do? Also no.