I don’t think that’s true at all.
Well, I can't speak for all children just the ones I know and of those kids ranging in age from 5 to 18 not one has an interest in Star Wars. The boys all are into Marvel, some also Harry Potter, and the girls all Potter and Frozen and whatever the teen films are. I spent New Years eve in a house with about 20 kids and there were none with any interest in Star Wars.
I have two nephews with a dad that loved Star Wars and they are the only two kids I know that even have a clue about it but if you ask them if they want to watch it they have no interest. They think it's a dad thing.
My grandkids who are old enough to know what they like *all* love Star Wars. The 7yo watches the various TV series on Disney + (he desperately wants to see the new movie but his dad, my son and also a huge fan, says "no" - after seeing it I agree) and his 6yo brother joins him on occasion. The 16yo and I saw "The Rise of Skywalker" yesterday - and royally pissed off his 2 sisters (13 and 8) because we went without them (their mom, my daughter, said "Leave them - it's a tradition with you two plus it's PG-13. I'll get your opinion maybe take them later."). He's loved Star Wars since he was old enough to know what it was. His dad and I both exposed him to the movies early on and he loved them (especially Episode 1 but he's come around in recent years). Many of his friends are fans as are many of the 13yo's friends. BUT - they don't obsess over the movies like some of the people who've been on the ride since 1977. They also love Harry Potter, and Frozen, and Marvel, and DC, and many other franchises and individual movies. They generally don't obsess over those either.Well I have just as useless anecdotal evidence. I have about 10 nieces and nephews between the ages of 4-20 years old and they all love Star Wars.
Go figure.