Snap install fails without sudo even if run as root - debian 9

Running as root
snap install microk8s --classic
it exits with this message
/snap/microk8s/1864/actions/common/ line 81: sudo: command not found

While I like, that the error message is quite forward and I got it working …
Should it really need sudo from the host?
And do I get this wrong about snaps or is this something that should kinda not happen?

Other then that it looks fine and if found to no be an issue I’d be ok with that too.