For a lot of these concepts, its also like saying 'I believe in the number 7'. Entropy is a metric that counts the number of states something takes. Entropy, itself, isn't an assertion about how reality is or isn't.

You, e.g., could disbelieve that the ergodicity hypothesis (that all states are eventually equally likely to occur) applies to real systems. But believing/disbelieving in 'entropy' itself is a category error.