The central paradox is powerful: technological modernity did not produce moral or psychological modernity at the same speed. I would tighten the ending slightly, because “nothing but suffering and abuse” is absolute enough to weaken an otherwise persuasive observation.
One of the things future historians may struggle to comprehend, looking back at the year 2026—with artificial intelligence evolving at lightning speed, extraordinary technologies emerging, and progressive movements reshaping society—is that countless parents, teachers, young people, and even children still understood life through archaic mentalities, dogmas, and traditions.
They may find it difficult to believe that, amid such unprecedented technological advancement, so many people continued to defend bigotry, ignorance, violence, and the right to impose upon others ways of life rooted in customs devised by peasants a thousand years earlier—along with ideologies repeatedly associated, through research and testimony, with suffering, repression, and abuse.
The future had already arrived in our machines, but not necessarily in our minds.
That final sentence captures the whole argument and gives it a memorable historical form.