33:59 indifference to jariya and other women's sufferings

[relearning]

33:59 O Prophet, tell your wives and your daughters and the women of the believers to bring down over themselves [part] of their outer garments. That is more suitable that they will be known and not be abused. And ever is Allah Forgiving and Merciful.

so it aims to protect prophet's wives, daughters and women believers (free not jariya or slaves). it openly says this is to protect them from abuse by letting the perpetrators to recognize them. The quran doesnt focus on perpetruators or the vicious crime they are doing by targeting jariyas and other women. It doesnt say protect all women against those perpetruators but instead follow a sign so your women and believer free women will not be targeted. This directive serves to protect only these women, rather than addressing the perpetrators or their acts of targeting non-believing  free women or jariyas muslim or none muslim. Why does the instruction focus on adopting a sign to prevent targeting specific groups of women, rather than safeguarding all women against such perpetrators?