Benjamin,
Thank you for pointing that out. For now, both methods are correct. Windows Server 2012 supports the old command and the new command. Future versions of Windows may remove the old command, but that hasn't been confirmed yet. For the record, here are the two:
Old Command (via Command Prompt):
winrm quickconfig
New Command (via PowerShell):
Enable-PSRemoting
The new command is actually an alias for Set-WSManQuickConfig which is the true successor to the old winrm quickconfig command. That wasn't mentioned in the episode and it really should have been. I'll have one of the guys add it to the show notes to avoid confusion in the future.
Thank you for pointing that out and sorry for any confusion it may have caused.
Don Pezet
Host, ITProTV