>it is entirely believable that GP is unable to use this service
They didn't say "it isn't available to me". They said it was "BS" - that is, that it was a lie and isn't a real service. They could have easily verified for themselves this isn't true. They could have even read the linked article which specifically mentions that Duplex did in fact come out.
They didn't say "it isn't available to me". They said it was "BS" - that is, that it was a lie and isn't a real service. They could have easily verified for themselves this isn't true. They could have even read the linked article which specifically mentions that Duplex did in fact come out.