I think the Startup Processes really gets abused and people default to blame Windows for it. My time to a usable desktop seemed slow until I removed Teams, Steam, Dropbox and some other update utilities from Startup. Now it's pretty much instant.
My parents bought this rubish computer about 3 years ago it is easily 3-5 mins to startup. Which is due to a lack of RAM (3GB, which should be plenty) and windows swapping to startup. Plus a bunch of startup apps they 'just can not live without'. I remove them, and get 'wow the computer is so much faster'. Few months later and some update to that 'must have' app will put itself back into the startup (sigh).
1 - https://docs.microsoft.com/en-us/sysinternals/downloads/auto...
I'm not sure why that isn't shown by default anymore. But you can still add it to the menu and map it to the power button.
Power off closes all your apps, hibernate doesn't.
I'm generally using 15 or 20 apps. I only have to open those once a month after updates.
If someone uses power off, they have to open them daily (I know, because I have other computers in my house configured like that).