> Why would anyone hate it apart from the fact it is yet another chat application.
It's not that I hate Allo, I just prefer Hangouts. That might seem orthogonal, but a part of me worries that at some point in the future Hangouts will be deprecated in favor of Allo.
Allo is in maintenance mode. The entire Allo team has been moved over to Android Messages. Hangouts is also in maintenance mode. The 'Hangouts' branding has been repositioned to their slack-type productivity tool. Like Allo, what you know as Hangouts is dead.
Really? Allo is(was) a great little chat app. Why would anyone hate it apart from the fact it is yet another chat application.