There are red pill moments in cartoons that I never got as a kid. Johnny Bravo is fairly red pill too, I loved the show when I was younger but like it more now after the red pill.
Fairly Odd parents has red pill moments, Timmy ignores trixie and she starts liking him. (Cat String theory)
The Simpsons : Milhouse gets a gf, Lisa gets super jealous of his gf ruins his relationship.
Family Guy: Very red pill, many moments Marriage in a nutshell
In Kids Next Door, king Sandy falls for Numbuh 3, she rejects him he gets pissed off but crushes on her sister making numbuh 3 super jealous.
And let's not forget south park ft Butters:

Spoiler Alert : If you haven't watched Butters Bottom Bitch and All of season 20, don't read the post, close the tab and go watch them.

In "Butters bottom bitch" Butters explains to Kyle, that a girlfirend is way more expensive than a prostitute. The romantic attention and sex is still paid for in a relationship.

And in season 20, all the girls break up with the boys, Butters is the MGTOW, Kyle is the TRP, and Cartman is the blue pill white knight mangina. Butters explains to cartman that women crawl into your heart and shit on leaving you devastated, Cartman still thinks Heidi is a NAWALT, butters explains further that he has been there.
Eventually Cartman is persuaded, dumps Heidi. knowing that the future is female supremacist.

Many cartoon creators are red pillers, except for Disney Princess movies they are super blue pill and make young impressionable girls become entitled bitches.