Well Let me get this straight. When I watch it for the first time, It was alright, but then, I see what they really are in the recent seasons (4&5). Also, there is too many animation errors. It happens in almost every single episode. Then, there's the villains, some of them are just too weak and some are just being tricked. And the most concerning is the main characters. They're all mid and just doesn't add anything to the main point. The episode release dates are not in order, and it's order is just completely random. They're like "What episode should we do first?" And its dates are just messed up instead of the ACTUAL order that the MLB Wiki has. Overall, the more seasons there are, the more mature the rating is because of the relationships in the show. I'd rate this show a D+-tier.
Also, just watch SpongeBob SquarePants. So much better.