I think it's hilarious/pathetic that they use the year 1935 as the cutoff date for the heavenly calling. Even if you're to take the number 144,000 as a literal number, this would have been filled by the 2nd century CE. I remember reading a post that someone did on here showing that over a quarter million Christians had been martyred by the end of the second century CE (correct me if I don't have those figures right). If that was the case, then there was certainly no room for the majority of the 'chosen' to be Witnesses. Or pardon me: Bible Students.
Their whole notion about the remnant and who's chosen, when they were chosen and how they're chosen is a pathetic joke when you examine it under a microscope. Imagine Jesus giving a year as the sole criteria on whether or not you get to go to heaven.