Before Internet video porn, kids were finding their dads’ Playboys and VHS tapes.
And before that, people living in cabins or caves had sex in full view of their children because there was nowhere else to do it.
Children seeing adults bang is not even remotely new, and nothing overly bad ever came of it. The only reason anyone is concerned with this is because their screwed-up religion taught them to be afraid of sex, and that is not an adequate justification for compromising innocent adults’ privacy.