Very true. In the UK tomato sauce is often a term used for tomato ketchup (the sort in bottles that you dollop on your plate to dip chips (fries in the US) into).
I am not a big ketchup fan. You will note that I don't include ketchup in the condiment sauces thread, although it is a condiment sauce. Anyone can feel free to include it there, if they should so desire.