Don't you think the situation might be a little different comparing parents who made a conscious choice to homeschool versus parents who were thrust into it with little to no warning?
Not having to deal with bullies, constant distractions, sharing the teacher with 30+ other kids, most of whom would rather be anywhere else, doing things at your own pace, is no small thing.
The problem is that parents who are being thrust into the homeschooling role typically _do_ have constant distractions, including their day job, watching other siblings, worrying about their financial situation, etc.