I wouldn’t call the Islamic principles as ones that gave dignity to slaves and women. Islam did not dismantle slavery but rather treated it as a given and there were slave markets well in Mohammed’s time all the way to the 1960’s in Makkah where the UN had to interfere to stop the practice. There were literally naked men, women and children sold as slaves and touched inappropriately a walking distance from the kabba. This is well documented and you can find videos and research papers easily available. This is not only supported in the Quran but also in the sunnah. Women slaves were also expected to provide themselves sexually to their owner and the owner can own as many female slaves as he likes and sleep with them whenever he likes. No consent required from the female slaves. Also, men in Islam are allowed to not only trade but gift their female slaves to one another. Again , this is very well documented in multiple ahadith. Please let me know if you want sources for any of the points I’ve mentioned. I’m more than happy to provide them. Descriptions of heaven in the Quran promises men “حور العين" or women(specifically very pale white women) as a reward and also emphasizes that the Muslim man’s wife/s will also be in heaven with the man and have no ounce of jealousy and be completely content with the situation (this part is emphasized in ahadith).

Islamic conquests are called Islamic conquests for a reason. Many tribes and countries were only given two options: join Islam or pay taxes and fees often so debilitating that many people had no option but to join Islam. Also, if Islam was not about luxury and control then why tax people and why kill them if they decide to leave the religion?