I see a difference with the typical instructions sent every year by this time of the year: The fact that they "have reasons to believe" that the number of publishers was higher and the emphasis put on the instructions to count "twice (or more times)" the publishers that deliver their late field service slips.
Now, if they actually start doing what the letter sent to Poland describes (making lists of inactive ones and sending such data to their respective branches) they might be going too far. Though they would try to mask it as their typical "we intend to provide those people with spiritual help", they would actually be showing their true colors.
Allow me to quote a book entitled "Revisiting Holocaust Representation in the Post-Witness Era" (page 12):
"The Nazis pursued what they called restlose Erfassung, which means a total registering, without loose ends; an expression that connotes also 'all-embracing seizure'. This ambition led to a fanatic policy of counting, making lists and conducting censuses."
If the indoctrinated friends cannot clearly see how similar the Watchtower methods are to those of the Nazis or any other absolutist regime, I don't know if there's any hope for us to rescue them from this shameful organization.