Re: "different" diet question/opinion
Sauces that come out of jars are an extremely recent invention. Traditional food cultures mostly use spices (seeds), herbs (leaves), salsas and chutneys (fruit, vegetables), and natural sugars (honey, fruit juice) to flavor their food. All of these are paleo, so I'm not sure what the problem is.
I'm not going to tell you can't use seasonings from a jar. But if you read the labels and don't like what you see, there are plenty of better alternatives than doing without.