Surprising, absolutely not.
Appalling, definitely.
I work across a large number of schools and have been in education for 30 years. Definitely a huge change in developmental expectation and stage. This isn't just COVID, more about screen time and isolation.
At one time, children weren't allowed to start a school nursery at three, unless they were toilet trained. We had the very occasional child where this was the case, parent deferred the place and within a couple of weeks they were back with the child toilet trained and ready to start. Now I see numerous children at age 4-5, in full time school, requiring toilet training.
Language is affected too by screens. The number of children with American English and an American accent. No need to guess how they fill their time.
Children who swipe the bottom of a page in a book and look puzzled when the page doesn't flick over.
Children who can't follow an instruction or answer when asked a question.
Children without curiosity, to investigate, to try, to fail, to become resilient. To problem solve.
I really do worry about parenting and the impact on young children, our adults if the future.