The Bible says bigamy is ok. Of course society went and said screw God and made their own laws. Of course, for me, one wife is enough. But God I’m sure is pissed off.
The Bible does not say bigamy is ok.
It records instances of it. I puts in a couple of protections for extra wives. But it neither prescribes nor condones it. Just acknowledges it.
Actually, many stories in Scripture serve as cautionary tales about the serious problems that arise from it.