If you those products eat you will supporting a company that supports milk products. You may as well cook up a fat juicy steak this point.
Post was already removed by the time I saw this quote, but that was one of the most absurd statements I've read in a while.
The other thing that hasn't been mentioned is, most smaller independent companies can't afford to shell out hundreds of thousands of dollars to set up dedicated dairy-free production facilities to make all their products in-house. Not only does it cost a lot to set up your companiy, pay yourself/employees, deal with materials, taxes, office space, etc., but then you have to factor on that it can cost a massive amount to buy the machinery to produce items that seem simple to manufacture. So, what do these companies do? They have to contract manufacturing out to someone else to produce their products, most often to someone who will manufacture other non-vegan products in the same facility for someone else (there are very, very few all-vegan contract manufacturers out there, and in the USA, I don't even know if there are any at this time).
If that sort of "guilt by association" makes someone as non-vegan as gobigo claims, then we're all doomed. Some people still want to make veganism some sort of crazy cult, apparently!