Anything that exceeds the difficulty of a assembling a sandwich or put something on and off a grill, is something I'm gonna leave to the pros.

A bit of brown sugar really helps bring a red sauce together and yogurt is good sweet or savory (granted I like my sweet yogurt to just be sweetened with fruit and no pure sugar added but that's a preference thing)

As per usual in my responses to comments like this, just because it is easy for you to make these things doesn't mean it is easy or practical for everyone to. From scratch takes longer, requires more knowledge which takes time to acquire, makes more dishes, requires more types of equipment, and in the case of yogurt can be a safety thing

It is on the companies making these products to do better not on the individual seeking to make a part of their life easier

Fruit yoghurt is pretty much yoghurt with fruit jam added, so it ends up with quite a lot more sugar than the natural stuff which has no added sugar, so ever since I've had to start watching out for my sugar intake I've started only eating the natural one and adding cinnamon or vanilla extract for flavour.

It's amazing how after a while of cutting sugars from your food you get used to it, don't feel the need for it anymore and even start finding the most sugary stuff (like certain kinds of sweets) unpleasantly sweet.

sugar doesn't belong as an ingredient in either

Ya says who? Almost all sauces are made with a little sugar. It helps cut the acidity.

You don’t need to add a ton but to say you NEVER add sugar to sauce is ignorant.