The protection of orphan children still means they do not become your ‘legal’ child, they are not yours but you raise them as your own, with full rights going to them at their age of maturity:-
4:6 Train and educate the orphans well. When they reach the age of marriage, and attain sound judgment, release their property to them. The marriageable age shall mean attainment of physical and mental maturity when one can legally make a solemn contract (4:21). Do not consume their property or let it be wasted. Nor hastily spend it fearing that they will come of age. If the guardian is well off, let him claim no compensation for the management of the property. But, if he is poor he may have a just and reasonable amount. When you are releasing the property to the orphans be sure to take witnesses. Remember that God is Competent in taking account.
This could also mean that you do not have to marry women in order to stop lewdness spreading. The biggest cause of divorce is adultery, so marriage does not prevent this!
When the Quran uses the term ‘Oh Messenger’ it sometimes addresses the wider Muslim Ummah and not just the person of the Messenger. Hence, we see plural words used after this to denote all the people and their wives, not necessarily multiple wives for each man.
4:127 (It is imperative to realize that women are no less a part of the society. Moreover, they are the custodians of the future generations like a garden that bears flowery plants 2:223.) They ask you to enlighten them further about the Laws concerning women (O Prophet!) Say, “God Himself enlightens you about the Laws concerning them, and the Book which has been recited to you conveys the Decree. You shall restore the rights of the orphaned women to whom you give not what is ordained (their due marital gifts) when you wish to marry them. And God decrees about helpless children, and your duty to treat orphans in a most kind manner. And whatever good you may do, God is ever Aware.” [You shall be especially kind to women who are widowed, orphaned, or left helpless for any reason 2:83, 2:215, 4:3, 2:240, 8:41]
4:128 IF A WOMAN experiences ill-treatment from HER HUSBAND or fears that he might turn away from her, there should be no hesitation in taking corrective action and resolving the matter between them amicably. Conciliation is best. Selfishness is ever present in human psyche. And if you take care to benefit each other and be mindful of God, certainly God is ever Aware of all you do. [God, the Cognizant shows you the best way. 2:228-234, 4:3, 4:19, 4:35, 4:128, 33:49, 58:1 65:1-4]
4:129 [Men who have been permitted a second wife for post-war exigencies (4:3) must understand that] You will not be able to deal equally between your wives however much you wish. But do not turn altogether away from one, leaving her as if in suspense between having and not having a husband. Fulfill the rights of each one of them and be mindful of God. Surely, God is ever Forgiving, Merciful. [Your effort is seen 53:40, and He is the Absolver of your imperfections]
4:128 is speaking about one woman and her husband, but 4:129 seems to suggest it is about treating multiple wives equally. But if we again see this as speaking to the wider community about not mistreating wives you are upset with, not turning away from HER, not leaving HER in suspense as to your intentions, then we do not necessarily need to see multiple wives here either. Re-read the above verses without the words in brackets.
4:127 says you can marry orphaned women when they are mature enough to do so, but you must give them their own inheritance, theirs by rights; the marriage gift from you may be cancelled. This could still not mean multiple wives.
The Arabic word for orphans has been said to mean widows as well. Is this Lane’s Lexicon getting the meaning from the interpretation of the Quran put by our ancestors, or is this a genuine meaning for the word, in which case men are allowed to marry the widows?