I can see why this title seems misleading, but I think it really depends on how you use Inbox and what features you care most about. What I'm really going to miss with Inbox is how my e-mails were framed as tasks that I needed to get through each day. I could easily check them off, or snooze them with an implied priority (later today, this weekend, someday, etc.).
I found a lot of value in that, so I hope that I'll find a lot of value in Monolist. I haven't found a task management app that successfully incorporates many integrations (that I actually use) in a way that is useful, and intuitive. I think there are a lot of opportunities to add delightful features, looking forward to giving feedback!