I get that you’re being practical here. You’re not technically wrong, and the people who are disagreeing with you really are arguing points of nuance.
But they aren’t wrong either. That nuance matters in certain contexts.
You can pick this hill to defend. Or you can learn something that you didn’t know about the people in your online community, and probably your IRL community too.
Embrace learning something new. It will almost never be a waste of your time.
Check out the website Common Sense Media. They do a great job of listing which movies are good for which age groups. You can also find lists of movies based on which streaming service you have access to.
I’ve really enjoyed The Mitchells Vs The Machines with my little guy lately.