For about twenty years, I've been noticing that what used to be mainly children's errors, like these, have been entering the mainstream of adult speech. To say "I haven't ate yet" or "Grandma got ran over by a reindeer", were once limited to preschoolers, but now I hear this kind of thing all. the. time. I don't mean, by the way, speakers of distinct dialects, or ESL speakers. I refer to native speakers of General American, frequently with college degrees as well.

Are other languages experiencing this kind of breakdown, where nothing is considered wrong anymore?