If you buy Purina, you're paying for dog food. If you donate money to a proposition that opposes gay marriage, you are paying for a proposition that opposes gay marriage.
I intentionally avoid Chik-fil-a, The Salvation Army, etc. by choice. However, if someone was pro-LGBT and still chose to eat Chik-fil-a, I don't really care. The only time it would be comparable would be the people who intentionally started eating Chik-fil-a as a show of opposition to the people who were boycotting it.
If you buy Purina, you're paying for dog food. If you donate money to a proposition that opposes gay marriage, you are paying for a proposition that opposes gay marriage.
I intentionally avoid Chik-fil-a, The Salvation Army, etc. by choice. However, if someone was pro-LGBT and still chose to eat Chik-fil-a, I don't really care. The only time it would be comparable would be the people who intentionally started eating Chik-fil-a as a show of opposition to the people who were boycotting it.