BackupBuddy and Exec Function

Reading from the php.ini…….

disable_functions = system, exec, passthru, shell_exec, show_source, popen, pclose, pcntl_exec

From the above, does BackupBuddy only need exec removed from the list??

I wish I did not have to do this but I think for BackupBuddy to work I think I have to do it.

Am I making my site vulnerable by doing this? It seems that exec is a open door.