Well, you should've clicked his link, tbh. He was making that point, but he just put more emphasis on 'ANY' than 'doesn't admit'. Also, like anything, Asimov talked about it:

"A number of things of varying degrees of likelihood. A kind of profile. For instance, about 9o percent of the inhabited planets in the Galaxy have rotation periods of between twenty-two and twenty-six Galactic Standard Hours. Well - " " Trevize cut in. "I hope you didn't pay any attention to that, Janov. There's no mystery there. For a planet to be habitable, you don't want it to rotate so quickly that air circulation patterns produce impossibly stormy conditions or so slowly that temperature variation patterns are extreme. It's a property that's self-selective. Human beings prefer to live on planets with suitable characteristics, and then when all habitable planets resemble each other in these characteristics, some say, `What an amazing coincidence,' when it's not amazing at all and not even a coincidence."

"As a matter of fact," said Pelorat calmly, "that's a well-known phenomenon in social science. In physics, too, I believe-but I'm not a physicist and I'm not certain about that. In any case, it is called the `anthropic principle: The observer influences the events he observes by the mere act of observing them or by being there to observe them. But the question is: Where is the planet that served as a model? Which planet rotates in precisely one Galactic Standard Day of twenty-four Galactic Standard Hours?"