I'm with them, I don't enjoy those scenes (in general - haven't seen the one in question). Not because I'm a prude, I just find them a little boring and they usually take too long - and often are immersion breaking themselves with how they clothe or position characters to appeal to TV decency standards. An implication and a fade away is enough for me, unless something pivotal happens within the scene itself.
I agree that there are many stories where the fade away works just fine. I’m a bit baffled at the use of The Americans in this context though. It is distinctly not one of those stories, but one where each such scene — down to the literal blocking of action — helps explicate the narrative in terms of both plot and emotional arcs.
