No one deserves to be trolled. Meghan is doing what she believes is right in her eyes and whether the public and media think its wrong or right she hasn't committed any crime. It may not be what Harry's family want but they are independent people now.
People have a choice whether to listen to what they are saying or not. I tend to not pay much attention to what the do or say. Makes no difference to me but to troll someone is low. It has caused a lot of mental health issues among a lot of famous people and a few who have taken their lives over it.