Don't forget an even earlier teaching that all "inferior" races would eventually morph into white. Hmmm... a paradise consisting ENTIRELY of adult white males. I happen to be one of those, but I can't imagine anything paradise-like about world filled with veritable clones of myself. For one thing, I love women way too much (one in particular, and exclusively as far as romance goes). A world without females and children would be no paradise for me. No thanks!
And that's not even deigning to address the implied inferiority of all races other than white.
Seriously, it's hard to believe they ever put out such tripe. Even worse, to my knowledge they have never officially retracted any of these wild and baseless ideas. They may claim this is just "old light" brought up to embarass them, but they've never formally repudiated any of it (as far as I know) so any embarassment is well-deserved and on point.