NVR2L8 I LOVE the analogy of the two smoke detectors. The Borg false "alarm" goes off in 1874, 1879, 1914, 1915, 1918, 1925, 1975 and they say, "SEE? Our alarm system WORKS!" Any normal homeowner would have thrown the thing out after the first couple false alarms.
As for whether this is just normal Watchtower GB propaganda, the significance of this stuff is that it isn't a random paragraph in a Watchtower article praising the GB - which there always has been and still is plenty of. This is an ENTIRE BOOK dedicated to establishing the Borg leadership as descending in a direct line from first century Christianity. It's the most audacious attempt at doing such a thing that they've ever done.