- I think you will find that these superlative words of guidance were uttered in the Kingdom Ministry sometime during mid-1974 (May of 1974, I seem to remember).
Anyway, many publishers were frantically selling off property, then using the proceeds to "pioneer", during that year before 1975. Not surprisingly, though, few of those same individuals were still in the pioneer service two years later (when I was). In fact, many of them were no longer "In the Truth" by then. (A lot crashed spectacularly - getting DF'd for the Trifecta of smoking, drinking and sexual immorality- this according to the then Branch Overseer).
After this particular Kingdom Ministry praised these persons for selling everything and plunging into full time service, an article in a 1976 Watchtower article severely criticised them for what they had done. That WT article was all about "Serving with Eternity in View" - not serving until a date.
Maybe that is why the present day JWs are not all special pioneers - i.e. they are just following the WTS's counsel to "Serve with Eternity in View."
(Says Bill, with his tongue deeply embedded in his cheek!)