Yep, that is exactly how it is in the US as well. Each Individual may vary, but the general thrust of their education is as you said, psychiatrists are generally med focused (technically they complete med school and then specialize in psych) and psychologist completes grad school (PhD. or PsyD.) with the focus on psych and learns a bit about meds (since they are likely a big part of the picture for some patients). Psychologist generally can’t prescribe meds (though there are some contexts where they can) and psychiatrists often don’t do therapy (though again exceptions exist). BOTH can and do give official diagnoses, though many healthcare systems are set up with psychologists (or other mental health providers LMFT, LCSW, Etc.) seeing and diagnosing first, with psychiatrists reviewing diagnoses only if prescribing meds.
Another poster mentioned needing a psychiatrist for official diagnoses, and that is false in the US.
Obnoxious, but also NOT correct. As another poster pointed out baby talk does serve a purpose in language development, and is a pretty universal part of child rearing. It’s not some recent cultural phenomenon that’s holding people bad from their full potential (or whatever BS this person is trying to imply). Using big words or skipping the baby talk stage doesn’t lead to more rapid or better development.