I don't think that bedtimes, house rules are anything to do with unschooling. Unschooling is a hands-off (or "autonomous" if you like) approach to education, it's not related to parenting in general. Of course some parents also have a more hands off or non-traditional approach to things like discipline and/or bedtimes and house rules, values of course which may well correlate with parents who decide unschooling is something they believe in, but the two things are not inextricably linked. You can unschool with bedtimes and you can homeschool/school educate without set bedtimes. Presumably the child who attends school would end up in a fairly regular pattern because of getting up early every day.
I actually love the concept of unschooling and would love to do it but I struggle with depression and I need the structure that school brings, and I need to work for my own mental health. I'm actually relieved we live in Germany where home ed is illegal, because it takes away that option, which I would love to take but would be really, really shit at.
That said I will happily chat theory with anyone for days :)
I do think there is a difference between unschooling where the parents are proactive and happy to facilitate a lot of things. I disagree that "the other kind" is about parents wanting to do nothing - if that were the case, surely they would send their child to one of the many free state schools we have in the UK. I feel that home education of any kind (but particularly unschooling, weirdly, anything with more structure is much easier to structure around things like childcare, clubs, etc although US can be done in any setting theoretically) does require quite a big commitment from the parents, really you need a SAHP or to share childcare. The example about the childminder and the four hour nap - great, perfectly fine if he was at home but unworkable in a CM's business, which is of course what she's trying to run. It's a shame - I actually wish that unschooling was more popular and that there was sympathetic childcare available. If I had loads of money, time and was back in the UK I'd love to set something like that up because I think it's a brilliant philosophy but it's understandable that parents don't feel able to give so much time to it.
Some parents feel that boundaries around things like bedtimes, mealtimes etc aren't particularly important and instead the boundaries are more fundamental things like safety, being kind to each other, expressing feelings in appropriate ways, etc. I think it's unfair to label a lack of bedtimes as "no boundaries". Parents who choose that just have a different idea about what's important than you.