Helpppp

Please help me understand both sides of this as I’m only understanding mostly mine. I just feel like he’s being unrealistic as to who my mom can have to a party for Father’s Day.. I feel like him telling me not to go to my moms was rude as I encourage family highly on both sides. And the reason he doesn’t like this guy is cause he got our son a switch for his birthday. He’s been a family friend for years