When I experiment in the kitchen the "veggie X" groups really mess with me. I end up googling for ages to determine which ingredients are and aren't suitable substitutes. Naming a "veggie" product something it is not is a problem for me.
Outside ingredients, I avoid "veggie" ready meals. A rule of thumb for vegetarian food - if they make a big deal about it being the vegetarian version of X, then its terrible.
Do not mistake me, there is plenty of delicious vegetarian food. They just aren't variants of meat-dishes, they are meals of their own.
Apart from vegetable lasagna; thats almost always a winner.