Pokemon Go Ending Support For Apple Watch

Niantic has recently announced that it will end support for Apple Watch for Pokémon GO starting on July 1, 2019. Apple Watch incorporates your steps, earning Buddy Candy, and hatching Eggs which then syncs to the main game on your mobile phone. It seems like Niantic wants to keep your Pokemon Go to a single device rather than across multiple ones.
Here's an official statement regarding this
Pokémon GO is officially ending support for Apple Watch devices. Trainers using Apple Watch will no longer be able to connect their Apple Watch to Pokémon GO after July 1, 2019.
Because Adventure Sync allows Trainers the option of tracking their steps, earning Buddy Candy, and hatching Eggs in one mobile device rather than 2 separate devices, we want to focus on building Adventure Sync so that Trainers will no longer have to split their gameplay between 2 devices.