Lockdown I'm so sorry, that's awful. I agree there are people who still seem to have an odd attitude to adoption. One thing I notice - and again, I'm not part of an adoptive family - is when people refer to birth children as ' a child of my/their own' eg
they adopted as they couldn't have their own child
i wouldn't adopt, i'd want a child of my own
And I understand that this is perhaps a clunky use of language where other phrases could be used, but it just smacks of what you're talking about, that an adopted child/person isn't a 'real' relative.
All of which is , to me, very strange.
And to those who can't see it as offensive, I think it's a bit like whenever a woman features in a newstory, they refer to her marital status, or whether she has children, or whether she's a 'career woman' or something. It totally obiterates WHO a person is, as if their being adopted or divorce or whatever, is how we should judge them. Because how often are these bizarre qualifiers used in a positive light?