Do not post your autistic child/sibling/friend's name on the internet without their consent.
Do not post pictures of your autistic child/sibling/friend on the internet without their consent.
Do not post medical or legal documents pertaining to your autistic child/sibling/friend EVER because that is sensitive material.
Prospective employers can see these things. Landlords and universities can see these things. Discrimination against autistics is real, and it happens all the time regardless of laws protecting us.
This is more than a matter of respect for autistics in your life. This is potentially a matter of whether or not they can have a decent future. Your poor judgement, your lack of consideration, should not be barriers for autistics you say you care about.