I get through about 8 a day without trying really.
Five years ago I had a bowel tumour, and as I'm the sort who regards cookery as a chore, I got to thinking that this was payback time. So whilst I was waiting to find out if it was malignant I satisfied my curiosity by putting my diet through a spreadsheet to find out just how bad it really was. When I was done I nearly fell off my chair: it meets most of the healthy eating recommendations by a country mile.
The propaganda is that home cooked is healthy and processed is junk, but once you stop to think, it's obvious that a healthy diet is about what you eat, and not who cooks it. A lot of the reason my diet is healthy is that I don't buy stuff like chocolate, cakes, fizzy drink, fatty food, ready meals etc, not because of cooking everything myself from scratch. For the last year or so I've got into doing a bit more home cooking, and my fat intake has gone up slightly rather than down, probably because of all the olive oil that recipes call for. Last year Dolmio was slated in the media for having too much sugar, and all the foodies quickly came out of the woodwork crowing "I wouldn't be seen dead eating that muck" and "I cook everything myself" etc., but when they started posting their recipes online I pointed out that their own recipes were higher in sugar than the Dolmio.
Food manufacturers are on a hiding to nothing because they have to publish their ingredients when home cooks don't. They're panned for being unhealthy with the fat, and panned for being tasteless without it, but home cooks can put as much fat in as they like and still tell themselves it's healthy because it's home cooked.
You're not wrong. I think the assumption has been that those who prepare their own food are more aware of what is in it, and in so knowing will make better choices. Choices not available to you if you're not aware of what's in your food. People who don't know how much sugar is in their Dolmio sauce are unlikely to compensate for that in other areas of their diet. Those who have cooked from scratch know how much oil they've used, and CAN compensate by using less oils or fats in other parts of their diet. It's the can that's the issue isn't it? Just because I know what's in my food doesn't mean I'll make compensations for it.