Absolutely!
I can't believe how patronising people are being. Of course people can comment on the tiny bit of the tip of the iceberg of Meghan's family dynamics that they're seeing (even though this is obviously heavily distorted to make Meghan look like Lucifer by the British media).
But to go on pontificating, pretending to be "in the know" about things for which there is zero verifiable evidence, and purporting to tell the woman what to do and that she should expose her children to harmful, toxic individuals, is beyond disrespectful.
Frankly I would laugh in the face of even a neighbour or work colleague coming to me to tell me how to manage my family relationships based on the little they may have seen or been told of by some spiteful hater (hopefully I don't have too many of those....).
But I'm sure Meghan's avidly listening to all the outpouring of advice she's getting on these boards, so keep it coming!