I've been thinking about this over the past few days.
Personally I think it was right to strip them of their royal patronages.
I also now think they should now be stripped of the titles of Duke and Duchess of Sussex. Those titles are worthy of working royals, which they are now not. I also think they will continue to trade on that name which I find rude and insulting to the Queen.
Obviously Prince Harry should keep the title of Prince as that was the title bestowed on him at birth.
I cannot remember if there is a stipulation that a commoner marrying into the royal family automatically gets a title - i.e she would become Princess Meghan. ( I know Wallis Simpson was made a duchess, but maybe that part of the deal of his abdication? )
I find myself rather cross at them for the hurt and upset that has been caused to the Queen. She is an elderly lady and has served the country impeccably for nearly 70 years. She doesn't deserve this.