Because the chief product officer of HMD is saying Pie (as a beta) is only available for Nokia 7 Plus and given not a single Nokia user has reported a handset getting a stable version of Pie I'd say he knows what he is talking about.
They might not have meant Oreo but given Pie is not available for Nokia 3,5,6 and 8 what do you think they meant?
What on earth are you talking about fella? Your argument shifts direction with every post you make, one minute you are saying it is available and then you are saying oh no he means it is coming.
Everyone knows Pie is coming but that was not the question posed was it.