Great observation on noticing the deprecation dates! Just to clarify, deprecation does not mean they are turned off, but means that they will be turning off. You can read more about the descriptions of deprecation versus end of life, here:
So an API here goes from:
Live/Production > Deprecation > End of Life
We make sure to notify you when an endpoint reaches deprecation, so you have time to move over before it goes end of life.