not as a argument since I agreed with you for the most part but a discussion. After that you proceeded to take it into an argument. What you call open mindedness allowed you to define religion as something it is not commonly know as. I will present evidence for you here.
Religion, human beings relation to that which they regard as holy, sacred, absolute, spiritual, divine, or worthy of especial reverence.
https://www.britannica.com/topic/religion
Definition of religion
1a : the state of a religious a nun in her 20th year of religion
b(1) : the service and worship of God or the supernatural
(2) : commitment or devotion to religious faith or observance
https://www.merriam-webster.com/dictionary/religion
a set of beliefs concerning the cause, nature, and purpose of the universe, especially when considered as the creation of a superhuman agency or agencies, usually involving devotional and ritual observances, and often containing a moral code governing the conduct of human affairs.
https://www.dictionary.com/browse/religion
the belief in and worship of a god or gods, or any such system of belief and worship:
https://dictionary.cambridge.org/us/dictionary/english/religion
1. uncountable noun
Religion is belief in a god or gods and the activities that are connected with this belief, such as praying or worshiping in a building such as a church or temple.
...his understanding of Indian philosophy and religion.
Synonyms: belief, faith, doctrine, theology More Synonyms of religion
2. countable noun
A religion is a particular system of belief in a god or gods and the activities that are connected with this system.
https://www.collinsdictionary.com/us/dictionary/english/religion
It surely seems that Deism fits all of these definitions in one or another. Feel free to argue that it doesn't. I am confident that I can defend my position.
thanks,
Eko