Of course there are proper work from home jobs. I have been working from home for about 15 years. But in my experience they fall into three main categories.
Self Employed - this probably accounts for the majority and covers everything from freelance writing which I do, to people doing book keeping, web design, crafting, cake baking and everything in between. Can be lucrative but is never guaranteed in terms of income and hours, often a "feast or famine" situation.
Low level - yes lots of call centres outsource work but this won't offer the flexibility which many people want. On one hand the hours are usually guaranteed but on the flip side you have to be logged in when they tell you. You need a dedicated office space. You can't duck out for the school run. You most definitely can't have kids around.
Previously office based - lots of companies are cottoning on to the benefits of home working and allow staff to work a day at home or entirely at home. But usually it's an arangement offered to existing staff who have requested that and obviously it will depend on the role. And again, you can't often do childcare while working on a regular basis.
Finally there are also the scams, the MLMs. Which aren't even "jobs" in any way so aren't worthy of discussion.