This is a curious definition -- we would have said nonsensical, except that that would be rather judgmental -- because it does not require elements often associated with religion, such as deity, morality, world view, etc. Capitalism, homophobia, transphobia, President Obama's place of birth, and other beliefs might fit this definition. Also it requires that a person pursue their religion with enthusiasm. Many people identify themselves with a specific religion, but are not intensely engaged with their faith.
Murder, rape, pillage, plunder, slavery, and child abuse can not be justified by saying that some god says it’s OK. If more people would actually sit down and read the Bible there would be a lot more atheists like myself. Jesus also promoted the idea that all men should castrate themselves to go to heaven: For there are eunuchs, that were so born from their mother’s womb: and there are eunuchs, that were made eunuchs by men: and there are eunuchs, that made themselves eunuchs for the kingdom of heaven’s sake. He that is able to receive it, let him receive it (Matthew 19:12). I don’t know why anyone would follow the teachings of someone who literally tells all men to cut off their privates.