This does make sense I guess. I have heard almost every paternal grandmother and grandfather and aunt and uncle, say the new baby looks like the father. Not the mother. Probably very rarely done with spite @OhDoOne77 but sometimes it might be.
My DH's mother used to say how much my DD looked like him and HIS father, but she didn't looked much like him. She looked 100% like me. Me and DH look similar - blue eyes, blonde, wavy hair, average height etc etc, and she is 100% his, but she looks way more like me than him.
BIL (DH's brother) and FIL (DH's dad) used to bang on about it too. 'Ooooh, she's a Jackson alright! 100% a Jackson!' (DH's surname and their surname!) My maiden name was Harris, and they said 'no sign of any Harris in there!' My family NEVER said anything like this.. They never said to my DH 'OOOH there looks to be NOTHING of you and YOUR family in there.' With DH's family it came across as them trying to take possession. It never worked, DD was much closer to my parents, and family in general (as often happens.)
I have some pics of me from when I was 2 or 3, and some of DD when she was 2 or 3, and the only difference is that my pics are black and white. She is the spitting image of me. Everyone who has seen my toddler pics from the early 1970s, 100% thinks it's my DD, and are utterly shocked when they discover it's me, as they think it's my DD.
Some paternal relatives like to try and claim the grandchildren and get very possessive, because as saraclara said, the paternity can never be taken for granted, so they try and lay their claim so to speak. Unfortunately for paternal grandparents and paternal uncles and aunts etc, the grandchildren are more likely to be closer to the maternal grandparents and uncles and aunts, and are 100% definitely the mother's baby!
p.s. Jackson and Harris are not our real names!