I can't say I completely agree with these sentiments. It is true that the mori girl subculture advocates a slow-paced lifestyle that is perhaps more passive than those of so-called 'carnivorous' women. It is also quite true that mori girl style tries to downplay sexuality, leaning more towards a sexless aesthetic.
However, I don't think the mori girl lifestyle advocates fragility or weakness in any way. Mori girls, while peace-loving, are ardent about expressing their individuality, albeit in discreet ways. Their penchant for unique clothing, creative hobbies and rejection of mainstream attitudes to life are a quiet protest against the status quo.
The article does make a good point about the escape from reality the mori girl lifestyle offers, though. It'd be a pity to waste all that imagination, wouldn't it? :)