Did you notice that the articleâs tagline refers to Buddhism as a theology?
While itâs true that the literal sense of the word is related to âgodâ (Greek theos), there has been a broader use of the term for a long time.
The Wikipedia article on âTheologyâ states that,
âFrom the 17th century onwards, the term theology began to be used to refer to the study of religious ideas and teachings that are not specifically Christian or correlated with Christianity. â
I think the usage in that article was a general religious sense, not an attempt to redefine Buddhism as a theistic religion.
Yes, I know; it was just an observation. 
That being said, I have seen versions of Buddhism that look quite theistic.
Reading the classic novel The Tale of Genji recently, Iâve found the presentation of Buddhism there to be very âtheisticâ in a strict sense.
So, certainly âBuddhismâ is far from unified in its practices.
You are correct about âBuddhismâ as in itâs worldwide branches and practices, but Buddhism as the Buddha taught is most certainly not theistic as a religion goes. Yes, there are gods and such in the suttas, but not like theistic religions.
with metta