I think DB is digging himself into an even deeper hole by the minute.
He didn't know it was Meghan that had given birth, all he heard was Royal baby, Royal baby. My reply would be what planet does he live on that the last couple of weeks of intense speculation about the birth had passed him by. How many Royals did he think were due to give birth at this time? Has he not read a paper, watched TV, heard a radio during this time?
Someone told him the baby's mother was mixed race so he immediately deleted the tweet. So that tells us that he could see it was racist, otherwise why delete it?
He'd post similar about any famous person's baby, including his own grandchildren. Anybody able to link to such a tweet. Seems odd to me that as far as I know this is the first time he's found it necessary, and yet Katherine and William have given him three previous chances.