My guess is because people fundamentally understand that getting something for doing nothing (i.e. redistributing the new coins based on share of the collective) is communism. But let me hear the logic of others, because I want to understand this better.
By this logic, keeping money in an interest-paying savings account, investing in dividend-paying shares or government bonds, or owning a property in a period of rising house prices is communism. Also, the fundamental principle of communism is distributing wealth to match the distribution of labour rather than investment, the OPPOSITE of getting something for nothing (apart of course from the needy and infirm).Seriously though, I doubt anyone is turning their nose up at free money for reasons of ideological taste.