Are Toddlers Speaking Less?

A few years ago, I was a preschool teacher for 3-year-olds. They spoke clearly and in full sentences. You could understand them. Fast-forward to now, I’m volunteering with 3-year-olds again, and honestly? It’s different. Many aren’t speaking yet. Some mumble, others aren’t verbal at all. And the ones who are speaking? It’s not as clear. It made me wonder, what’s changed?