It's not about reading level. If someone has a low reading level due to disability, they should enjoy what they can, and if it's not disability just reading anything will eventually fix that. It's about the content. If someone is capable of understanding adult content and chooses to surround themselves with childish themes they are pathetic man/woman/person-babies.
It's not about easy or unchallenging. I'm not sitting here only reading great literature or things filled with purple prose using sat vocab words. Around 70% of what I read is sci-fi/fantasy and I read A LOT, so my quality bar has to drop pretty low to keep me occupied in between the really good stuff. Again, it's about adult vs. childish themes.
I'm sorry, but I feel like you're being a little disingenuous here. I don't think you need me to write an essay differentiating between various types of media. I think you know exactly what I mean when I mention people that refuse to grow up and continue to consume childish media well into adulthood.