The "Gods, religions and subsets of religions", as you put it, are evidence of mankind's extensive attempts to discover God.
Or our propensity to make up stories about unseen beings; our
hyperactive agent detection - which has a good basis in evolution.
Such evidence cannot be used to indicate that God does not exist, or that some of us have not found the one true God.
However, it is totally incompatible with the idea of a just, fair, omnipotent, and omniscient god who has an important message for us that could affect our entire future state. Such a god would make itself and its message clear to everyone.
What it does indicate is our unique ability to perceive the truth of God's existence, and our need for Him.
Or hyperactive agent detection.
No doubt some will claim that God should not hide Himself from us. But my understanding from scripture is that we have been separated from God by forces beyond our control...
But not beyond the control of an omnipotent god - obviously.
...and God has shown through Jesus how we can we reconciled and reunited with Him.
Unfortunately that is just a story in an old book - if it's an attempt by a god to get its message across, it's truly pathetic.
Which is why I, along with many other fellow Christians, would never choose to reject the teachings of scripture in favour of following trends of modern secular society.
There are no "teachings of scripture" (singular) - the bible is a confused and disjointed mess. That's why there are endless denominations, cults, and sects, that all claim to be following the "teachings of scripture".
You are also reading the bible in the light "trends of modern secular society" which is why you reject slavery, for example, which the bible does not.