I think that begs the question of what exactly constitutes "children's media" in general, as even many of the older Disney animated films got pretty risqué with what they featured. This might just be a generational thing, but over the years I've found that a lot of legacy media that's labeled as "child-friendly" tends to lean more into what's better described as family entertainment rather than just strictly "this is for kids and kids only". As such, of course it's going to include more mature themes that either a discerning parent can pick up on for their own entertainment without the child figuring out or otherwise should have the benefit of an adult nearby to help explain it.

"Back in the day" (pre-1980s) Disney made the original shorts that were family friendly, the "Silly Symphonies". WB competed with something a little more adult, but designed to have the jokes go harmlessly over the kid's heads.

Today... well, folks are a bit more aware, we don't have cartoon shorts before movies anymore; we have television and streaming media; we have the Internet; we have social change.

It's been argued that the last best Looney Tunes movie (yes, movie) was Space Jam. Space Jam 2 and Looney Tunes: Back in Action weren't that great and caused WB to shy away from it...

...but then the production companies started to move away from the "make a bunch of small-budget movies to fund the big budget movies" mentality and into the "fund the big budget movies up front and hope it's a hit" mentality... which has caught them broke time and time again.

WB's latest, "The Day the Earth Blew Up" has a bit of what you're looking for, but it's going to head to streaming soon. It wasn't marketed well, leaving anything to word of mouth. I hear it's good, but not great. I hope you're able to go out and watch it.

Look at how many films have lost money in the last decade when they should have been licenses to print money. Star Wars and Marvel have not made Disney one cent in profits when you factor in production costs/advertising costs and initial purchase price. Joker Two lost a bunch of money and drove the production studio into bankruptcy. Their executives knew it would happen and didn't care. Captain Marvel/Kamala Khan lose money. The latest Justice League game lost money. A bunch of $200-400 million video games have lost money lately.

Sony re-released Morbius when they saw that there was a lot of online mentions of the movie. They didn't check to see that it was people mocking how bad it was "My favorite part was when he yelled: 'It's morbin' time!'" They lost a bundle on that.

Indiana Jones part 4 was terrible and part 5 was worse. Captain America is losing a couple hundred million. Snow White will do the same.

Executives at entertainment companies get paid their exorbitant salaries even if the companies go bankrupt. They really don't care.

Given WB's current owners don't understand what you so eloquently posted, I have no qualms with thier plans to sell off the properties to get them out of their hands.