What I understood is acpid caputures power events like closing lid and according to defined rules, it triggers a activity like shutdown, sleep etc.
So, can I say that acpid service is not required for running commands like
shutdown -h now. It appears like it is, as acpid service itself is running
shutdown -h now command inside configuration file.
And also I wonder if acpid is required for servers. What kind of power events can we have for servers?