I agree, and I sort of understand that. That is a tough thing to be openly vulnerable about, particularly online. And as much as I think that she has only herself to blame when comparing herself to her peers financially or in terms of achievement yields unfavourable results, the family thing is a bit of a different story. Yes, she's surely hard to live with, but she has also been unlucky, and the fact that she has no children with Chris (yet) seems to suggest that maybe she does have infertility issues, or he is simply not willing to have a child with her (yet). At this point I don't think that she is deliberately waiting for the future father of her children to suddenly materialize so she can leave Chris. Where would she meet that man - on her couch? But last time she was dumped by her supposed "forever guy", she was open about it and then slowly spiralled into mental health issues. So yes, it's been a long time ago, but I think that she has changed her pattern and now forces herself to be callous to avoid being hurt too badly.
As a mum myself (who had her fair share of morning sickness), I would not have been offended by her saying that I should be glad to be in that position. Morning sickness grates (especially since it's a euphemism for "feeling like crap for days on end"), but an unfulfilled wish for a child is surely worse. So in the commenter's shoes I wouldn't have understood her comment as invalidating my experience, rather as a hint that I may just accidentally have complained to a homeless person that my hot tub is broken, so to speak
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I assume some will be so gullible. But judging by her views and number of followers, these people are getting fewer by the day.