Remove Christianity and civilization would soon smell better.

[Confused Ape]

Maybe he wasn't the right person. Maybe he was, and the results of the experiment are what led him to Christianity.

We can only speculate about it because it happened in the 19th century. There weren't many religions in the USA to choose from in those days so after trying spiritualism he ended up with Christianity - Later Conversion To Christianity

It is not clear if Walser's later Christianity was a hybrid with his earlier spiritualism, but he did author a book entitled The Life and Teachings of Jesus.

This is possible because many spiritualists believe in Jesus - The Differences Between Spiritualism And Christianity

Both accept the Bible and both believe Jesus was a human being who lived and taught. Christians see Jesus as their Savior. If they confess their sins and believe upon him, they are saved and will enter heaven. Spiritualists see Jesus as the Master Teacher or the person who showed us the way we should strive to become in our daily lives. The term “Wayshower” is frequently used in this connection. Both accept One God although the premise is different. Spiritualists accept God as Infinite Intelligence – an androgynous spirit being of neither sex but of unlimited knowledge in all matters while Christians see God as an anthropomorphic or father figure god.

From the wikipedia article again -

By surviving accounts, he didn't try to push his new beliefs on others.

Well, he knew what it was like to be harassed by Christians so I'm guessing he didn't want to inflict that on others.

We have no idea if he'd ever heard of the Theosophical Society which Helena Blavatsky founded in New York in 1875 so we can't say that he chose Christianity instead of Theosophy. We have no idea what religion he'd have converted to if he'd lived in our time. For all we know he might have become a Wiccan or ended up believing in Quantum Mysticism.

Either way, this experiment should carry more weight with people who claim to live life based on evidence than idle speculation on an atheist forum, don'tcha think?

In what way? I see it as yet another example of human behaviour in relation to religion. Some people stay with the religion they were raised in all their lives. Some people start out in one religion and change to another. Some religious people end up as atheists. Some atheists end up converting to a religion. Don't ask me why because I have no idea.