Regardless of who's to blame and all that meta conversation, Motorola has not been doing great with the updates these days. The original Moto G was updated to 5

Regardless of who's to blame and all that meta conversation, Motorola has not been doing great with the updates these days. The original Moto G was updated to 5.0 something like 9 months after the launch of 5.0. Moto E (2015) was updated from 5.0 to 5.1 and then abandoned. Turbo II got 6.0 a month or two ago. There are almost certainly worse OEMs who never update anything, or update 2 years late, but I would not describe Moto as rapid on updates.