You make valid points,
But the problem is you're excusing modern day islamic backwardness and repression and atrococities with the same commited by Jews and Christians centuries, even millenia ago.
You neglect to account the fact that in that world, Moslems were contempories who lived near or even amongst Jews and Christians, and while the latter two have evolved past that barbarism, islam has not, especially amongst sunnis who are in fact, from Arabia to Turkey, regressing away from modernity, at least socially.
It is 2017 all ever the world. Technology, communication, modernization, etc is an aspect of life everywhere on this planet, even with reindeer herders in obscure corners of Siberia.
Moslems are not isolated, trapped in backwardness, they are a part of this world. Heck, until the 16th Century they lead it.
Rape, homophobia, enslavement - by your argument, do we allow them because not only did Jews, Christians, and Moslems do so in the past, Moslems do so today?
Do we just give up and stone so-called 'sinners' to death because we used to and some still do so now?
Three with past wrongs don't make it right.