The path to anti-capitalism is not necessarily a straight line. People can reach it from many different, winding roads. Also, people are complex, we can hold a diversity of thoughts, on numerous different topics, simultaneously.
It should also be noted that anti-capitalists are not a monolith or hive-mind. Some anti-capitalists are relatively conservative, especially by Western, liberal standards. In fact, many Marxists are quite opposed to liberalism in general.
It may be that this young man isn't an anti-capitalist after all. It doesn't change my support. He has helped further expose the inhumanity of capitalism, either way.