The promotion sorting etc is awful. Have people never used email filters? We've had the ability to precisely design filters for decades already. I already have filters for the various mailing lists and forums I read.
I enabled some of the filters and it put an amazon update in with the spam so I missed my delivery. What else could you miss?
When the inbox categorization system was rolled out by Gmail, I thought this was over engineering and the average person wouldn't need this.
Fast forward an year later, I'm surprised how good it works. My inbox is filtered clean of all "secondary" email. You might have some false positives and you have to tell the system that Amazon deliveries go to Updates not Promotions etc. But I wouldn't want to go to the world before the categorizations.
I enabled some of the filters and it put an amazon update in with the spam so I missed my delivery. What else could you miss?