The claim: "4:3 says 'marry two, three, four'; the Qur'an commands / encourages polygamy."
The verse is not a command but a conditional permission
- The context of 4:3 is orphans: it opens, "If you fear you cannot do justice to the orphans" — i.e. the protection of orphaned and widowed women after war.
- The permission is bound to a heavy condition of justice: "If you fear you cannot be just, then one (is enough)." (4:3)
- Moreover the Qur'an says this justice is practically near-impossible: "However hard you try, you will not be able to be just between wives." (4:129)
Read together, the text's inclination is toward monogamy; polygamy is not a command but a restricted dispensation (a cap of four over the era's unlimited marriage).
An honest limit
Fact: the Qur'an permits polygamy (up to four). Inference: "so it praises / commands it." This is false: permission ≠ command; the verse narrows it with conditions and an emphasis on justice. Whether 4:3's main aim is justice to orphans or a general dispensation is open to interpretation; but "the Qur'an commands polygamy" is against the text.
Source: Qur'anic verses (M. Okuyan meal). Presented soberly and respectfully, with a text/interpretation distinction.