The true God is the Creator and worshiping other than the true God implies the claim that they are deities. The God must be a creator and the proof of his being a creator must be either by witnessing what he has created in the universe or by revelation from God Who is proven to be a Creator. So, if this claim has no proof to support it, neither from the creation of the witnessed universe nor from the words of the Creator, then such deities are definitely false deities.
{Allah created every living creature from water. Some of them move on their bellies, and some walk on two legs and some walk on four. Allah creates what He wills. Allah is Most Capable of all things.} [113] Surat an-Nūr: 45.
There is something called the sound Fitrah (natural disposition) or the sound logic. So, whatever conforms to logic and to the sound natural disposition and the sound mind is from Allah, and whatever is complicated is from human beings.
