There's not much point in running with this, the teaching will change once it becomes completely untenable.
Interesting thing though, is that this teaching is barely tenable right now! And it only changed last when... 2010? I think the overlapping BS started in 1995. They won't be able to get away with officially changing it without some fallout.
IMHO their best play would be to ignore the words "this generation" completely for a while, remove it in new editions of old books, etc. Then once someone brings it up they can say that is a 'previously held view' and can berate the questioner for not 'keeping up with Jehovah's chariot.'