Agree with you, but also, for how many decades should they wait for browsers to get their shit together? It's not as though input type="number" is particularly new.
In retrospect, they should have left all these special input types out and let application developers handle it with Javascript. There are too many real world cases they cannot handle, and real world knowledge probably shouldn't be hard coded into web browsers in the first place. The date entry is an example of something that is particularly useless - it is not flexible enough.
I don't want the browser to know or dictate what date format to use, that is the application's job, and the date input doesn't even let web applications specify the format. So you have a substantial engineering effort half implemented across a handful of browsers that approximately no one can use.
