My Mac Pro M1 takes about 34 seconds after the loading screen until the keyboard boots up and can be used when you start the laptop. Is that normal?
What exactly is "relatively long" for you?
It would be normal if you had given a time… Relative… Is relative…
C.a 34 seconds after the loading screen
After the loading screen about 34 seconds
Maybe the upcoming update version 11.2 will help?
https://www.macgadget.de/News/2021/01/22/Apple-veroeffentlicht-Release-Candidate-Build-von-macOS-112-und-informiert-ueber
A long time with SSD. Mine takes 6 seconds. Switch off autostart programs. E.g. AVG- TUNE UP.