I would agree with you, if this was in RP; however, this is out of RP. And out of RP these people aren't pirates, they are just regular people. It wasn't a request to a pirate, it was an OOC request to the person flying the ship behind the computer screen.
If I was to say something like "There is a plague on our ship, spreading throughout our crew. Please let us go to a hospital ship." in RP, then yes, they are certainly within RP rights to act like a pirate and ignore the request. However, when it's "// OOC: Hold on please, I have to fix my weapon config." it has nothing to do with what faction we are in, or who we are playing.