canned tomatoes is bad??? :-O, trust me, unhealthy vegan food is not easy to find, because, most times, it is hard to find processed vegan snacks to begin with, and quickly get bored of eating the same brand of unhealthy ones
Not sure if you're being sarcastic, but all canned fruit/vegetables are insanely packed with sugar and salt.
So yes. They're bad for you. Granola is also bad for you. Nuts contain a lot of fat. Kale is bad for your thyroids. And so on.
Of course, make sure you drink enough non-sugary, non-alcoholic liquids with your salt. But people automatically get thirsty on salt anyway---so no need for advice.