Increasing the size of the platform does not devalue anyone's stash that is ridiculous. It is obvious to everyone that the way to make Steem/it successful is to grow the community. You could perhaps make an argument, as referenced in the video, that the most successful bloggers such as Jeff, if short-sighted, might want to reduce growth so they can continue to earn the very high early-adopter rewards they are getting now, but none of the whales with possible the exception of Dan fall in that category, nor do Jeff or most other successful bloggers appear to be that short-sighted.