I have a friend with an SN baby and she once phoned me to recount how, at a family gathering, she put her baby down on a bed.
"you shouldn't leave her there, she might fall off the bed"
"she can't roll or sit, she will be fine"
"no, it is far too dangerous to leave a baby of that age down on a bed, you never know when she will crawl"
"She has global developmental delay and can't move"
"still, you never know..."
She now also gets told off for spoon feeding her baby purees at 2 years old even though her DD has never chewed anything! Some people are just totally insensitive and unable to accept that a child's mother understands the situation better than they do.