Unironically you're missing the point. The point being, it's not a problem for many apps to start because oh how powerful PCs got. The problem is when some apps use so much resources that regardless of how powerful your PC gets, it's wasteful to have them opened all the time.
Reason for that problem is them using unoptimized frameworks such as Electron and CEF (seriously, check each app on the image).
And main reasons for that are:
Google posing browser component as a GUI framework.
Devs not caring (or being lazy) enough to do native coding.
I wish every person would realize the above so we could force developers do their job better.