En que te basas para asegurar eso ???
Es perfectamente viable crear un alias para un comando, es mas todas las referencias a alias usan ejemplos de comandos para ilustrar su uso, y la propia descripción del man menciona comando y en el ejemplo muestra el uso con un comando
Cita: DESCRIPTION
The alias utility shall create or redefine alias definitions or write
the values of existing alias definitions to standard output. An alias
definition provides a string value that shall replace a command name
when it is encountered; see Alias Substitution .
An alias definition shall affect the current shell execution environ-
ment and the execution environments of the subshells of the current
shell. When used as specified by this volume of IEEE Std 1003.1-2001,
the alias definition shall not affect the parent process of the current
shell nor any utility environment invoked by the shell; see Shell Exe-
cution Environment .
Los ejemplos
Cita: EXAMPLES
1. Change ls to give a columnated, more annotated output:
alias ls="ls -CF"
2. Create a simple "redo" command to repeat previous entries in the
command history file:
alias r='fc -s'
3. Use 1K units for du:
alias du=du\ -k
4. Set up nohup so that it can deal with an argument that is itself an
alias nohup="nohup "
alias name: