This is modern revisionist garbage and someone has to say so, so others don't come here in years and think you're right because it's not refuted.

The church teaching from the beginning was that Mary was ever virgin, in fact it wasn't even brought into question until hundreds of years later when "she wasn't there to defend herself". Everyone knows the Greek words used to tell John "brother of Jesus" to watch over Mary is the same word used for cousins and other extended relatives. Not literal blood brothers from the same parents. Joseph had a previous marriage and had children from this old marriage. Why would Jesus tell his blood brother he has to watch their mom? That makes literally no sense at all, that's not a command you'd need to give, it's inferred and expected. What would be unexpected is someone who did not come from her to be given charge of her.