With Connected Standby equipped apps means that supported apps are kept up to date even when it's sleeping and the lock screen is kept up to date with notifications. 10 seconds is a long time compared to my iPad which is unlocked and ready to go in under 1 second with touchID. As a countertop reference that I use on and off all day long, that's a huge difference. Also, if you have a complex work environment set up, there is considerable disruption caused by shutting that all down and re-opening everything.
Any computer today where people feel like they need to shut it down regularly is destined to fail.