(1) G*d made them male and female
-> in no way does this dictate monogamy. bonobo chimps and most other animals are male and female, but not monogamous.
(2) if you divorce and remarry
-> does not conflict with polygamy as long as polygamists do not divorce their 2nd, 3rd and so on wives. The passages you cite disallow Male1 dissolving marriage to Female1, but this in no way disallows Male1 from a marriage to Female2, Female3, etc., while keeping the marriage to Female1. (Before you bring it up, I have not given it study, but it may be that the bible does not condemn polyamory either.)
In addition you avoided addressing altogether the fact that polygamists are described without criticism in the OT. If the OT is the word of G*d, then you must agree that G*d blew whatever chance he had of condemning polygamists in the OT.
Martin Luther read the bible and apparently agreed. The Mormons read the bible and apparently agreed.
At the very least, it is open to interpretation.
Of course, those with deep seated sexual insecurities may harbor strong internal psychological motivation to interpret the bible according to those deep seated sexual insecurities.
If that's the case, Christ wouldn't call them guilty of adultery when they marry another, since, by definition, it is a legal marriage, and only the dissolution of a previous marriage is the sin.
in no way does this dictate monogamy. bonobo chimps and most other animals are male and female, but not monogamous.
We are not animals, but were made rational creatures with a single help-mate.
In addition you avoided addressing altogether the fact that polygamists are described without criticism in the OT.
Neither is divorce as practiced by the Jews ever specifically condemned, but Christ here condemns it. At this time, however, polygamy was already out of favor. None of the Rabbis in the Talmud were polygamists.
There is nothing Christian about Polygamy. Polygamy degrades & abuses women, period. We do not live under the old law.