@VioletaDelValle i agree. Sure, I don’t care, but for some people supporting a football team is a huge deal. It’s something that they desperately want to share with their own child.
They may find that their child rejects it (which is fine), but having other adults (who aren’t the child’s parents) purposefully try to undermine this and ‘tempt’ the child to their team is just shit.
Given the OP clearly doesn’t care about football, it’s fair to just let her husband have his football with his son thing. Her dad should stay out of it.
It really isn’t different to an OP who has always dreamed of having a little girl with long hair who she can dress to her taste. Only to find that MIL has decided to take her 3 year old to the hairdresser for a short bob and insists on changing her into her own clothes as soon as she arrives.
It’s only hair and clothes. The hair can grow back. And potentially in the future, the DD might want to get a number 3 all over. But why shouldn’t the mother get to style her daughter in ways she loves while the child is happy to go along with it? And, certainly, why should her MIL get to impose her wishes on the situation?
When you’re in a relationship, you know about the weird foibles and passions your partner has. Presumably you love them. Why would you let your parents undermine your partner sharing that stuff with his kids?