Apple was the last to leave the Creator Htm Gruber, the last of the founders of Siri, decided to leave Apple.
Previously, he worked in the company as the main developer of Siri, which means all the latest changes in the voice assistant is associated with his name. Now Gruber decided to pursue personal projects in conservation of the oceans.
The last two founders left the company back in 2011 due to disagreements with management. Now, alas, did not survive the third.
Maybe it’s for the best. Lately Siri has not changed. The only useful update is the app Shortcuts, which will be released in the fall with iOS 12.