Alan F
There is no hypocrisy at all because celebrated WT scholars are merely stating the generally accepted fact that the Return happened in 537 BCE or in other words this observation of the biblical and secular evidence reflects current and past knowledge. What you claim is rather an extreme and fanatical view of simple biblical and secular facts that cannot be construed your dogmatic position. I know that your view would not be accepted by any serious-minded scholar because of the simple onservation that the year of the Return is of minimal importance but the fact of the Return is of significant historical and theological significance.
The calculation of 537 BCE is not based upon speculation at all but on biblical and seclar evidence and these relevant facts are presented in WT publications over many decades. Jonsson himself acknowledges this because he offers no substantive criticism of the this date and its determination. Josephus has offers nothing that disproves that 537 BCE is the year for the Return and neither does Ezra.
The facts that you say are incontrovertible are such only to youand like-minded apostates and are viewed somewhat differently by scholars. You really need to run your hypothesis past your guru Jonsson and see if he will include this new material in a future edition of his GTR for it to have any merit at all.
What you need to understand first before tabulating the data is that there is considerable debate about when the first year of Cyrus should commence but in either event celebrated WT scholars have reconciled such views so that the Exiles returned home by the seventh month of 537BCE which recognizes the Finegan observation that the first year of Cyrus began 538/537 BCE.
If you wish to examine the acceptance of 537 by the scholarly community then is amply demonstrated by using Google and you will have all the information you need.
scholar JW