I have more sympathy for those who have medical reasons why they cannot eat wheat bread or other foods than I do those who do so as a lifestyle choice, but don't want to give up their previously favorite foods. If you are eschewing meat, you shouldn't be chewing on plant burgers that have far more 'processed' ingredients in them.
Carbs are necessary as are fats and proteins, the trick is to eat them in reasonable proportions and quantities.