Sure, that's why Smokey the Bear is such a bad idea. Ignore the fact that pushing propaganda starts young, (the population in general, but especially) children are impressionable, and (echoing sibling) that we should probably consider the impacts of media on children.

Lots of cartoons are wholesome, and it can be a powerful tool for setting social norms. More to the point, it's going to happen anyways - so let's do what we can to make sure it's a message we agree with

I mean, I probably saw this when I was 4 or so, and I don't have any children now. I can't really blame my four year old self for being impressionable. I'd say this is probably more of an example of why people should be cautious of the kind of content they put in front of their kids.