I think I touched a nerve.
I did correctly assess your opinion and you seem quite offended by other people's opinions yourself...
I do see philosophy inexorably moving towards the conclusion that "the Absolute is One"
Why?
This is a rejection of Really Cool multiple gods theology.
This "multiple gods" theology is really unclear, you could argue that even some of the late archaic Greeks were non-fully polytheist with Anaximander arguing about the concept of "apeiron".
Ultimately though what exactly are we comparing those "monotheistic tendencies"(if we can call it that) to? Even more polytheist cosmologies could be argued to hint at some "absolute one" or singular origin point or source of everything. It seems to me that this way of defining polytheism is quite narrow.
Heck even Vedic religion could be said to have such tendencies and yet it's not like Hinduism ended adopting a single clear stance on the matter after all those millennia, which shows to me that there is no tendencies towards one specific opinion, heck I'd argue the existence of Mormonism and Gnostic faiths also suggests that even people raised as Christians could end up adopting less monotheistic views.
That's a good point, and raises the question if "pure" monotheism actually exists.
In theory it can exist as can "pure" polytheism but it doesn't make sense to me to argue in terms of definite categories most of the time, I think there are good arguments to be made that there are multiple forces at play pushing people's beliefs in a direction or another but to say that those factors are strong enough to determine the trajectory of all religions or cosmologies seems a stretch to me.
For example comparisons can be made between the concept of patron saints of cities and professions to the concept local deities or "specialized" deities, at least to me it's hard to ignore this and only focus on whether there is nominally a single god(or even a single god in the trinitarian sense...) or more, especially when so many nominally polytheistic faiths have hierarchies or origin stories that converge toward a single origin source.