Most of the lazzy developers stick with the (too) open Google environment. However, most business use O365. So, it should be great to have calendar integration with O365 as well.
Lazzy is certainly not true at all.
Anyway, if you really want it, there are ifttt and zapier recipes to sync a google calendar to a o365 calendar for example https://ifttt.com/applets/YDz9nHcX-google-calendar-event-to-office-365-calendar-event