Meat has plenty of salt in it. Vegetables don't.
If you eat a healthy balanced diet of vegetables and legumes. If you don't add salt to your meals, you probably aren't getting enough. Your body is clever. If you're craving salt, you probably need more salt in your diet. Try seasoning your veges a little. Will probably solve your problem of getting cravings, without resorting to to eating junk foods. Use a natural sea salt over anodized table salt. Much better for you.
Salt is a necessary part of a healthy diet. Anyone that flat tells you salt is unhealthy, knows nothing about food, or the human body. Like all things, too much is bad for you. Drinking too much water can literally kill you. That does not make water bad for you.
Salt assists in your bodies ability to retain moisture. An extremely important bodily function. Too little is exactly as bad for you as too much.
Salty foods are often fatty aswell. Saturated fats are very unhealthy, when consumed in excess. However, you do need some. A lot of vegetarians are often TOO healthy. Do you eat much nuts? They have the fats your body needs. You might not have enough healthy fats in your diet, if you mostly eat vegetables and fruit.