Naturally, you aren’t wrong. We all have different tolerances towards how each character acts according to writing. I was irked at how insensitive (mor than usual) Pinkie was, but It didn’t bother me that much. Perhaps that’s why I found the overreaction from others too much of a… reaction.
My point stands though. Whether folks think it’s a goof, like you say, or not, we should all really be calm about things we may or may not like in TV shows, especially ones for younger audiences. They’re just shows.