I disagree that you can toss the narrative aside so easily.
I feel that way about him because his play varies so much from month to month, and certain things he was doing and saying appeared to reflect a question of identity when he was playing poorly.
Last year he was hot in November when the offense focused on him more, but when Kyrie came back he took a nose dive. It would make sense if his total numbers went down because Kyrie needed touches, but what was crazy was how much his %'s went down. He slowly found his place over the course of the year until he was rocking in the playoffs, then he got that concussion in the Finals and crashed back down again (of course, Draymond's defense was an issue too). This year he started off the year rolling in November and December when the Cavs were firing on all cylinders, but when they fell apart in January he started playing like absolute shyt. In March and April after he came back from injury he very slowly started rebuilding his play a bit. In the playoffs he's continued to be a bit mediocre - I think he really needs a breakout if he's going to be a force against the Warriors.
His month-to-month numbers just vary too much for me to think that it's not at least partially mental.
I just looked at his home/away splits, and he shoots 45% (39% from three) at home, but only 40% (35% from three) on the road. Those are big differences, and support what I was saying.
If Love doesn't become more engaged and more dangerous, the Cavs might as well go all-in with the Lebron at PF and Tristan at Center lineups in the Finals and rotate whatever mixes of Kyrie/D-Will/JR/Shump/Korver are working at the other three spots. Korver has the same defensive liability but at least he's hitting his threes reliably, and JR/Shump give you the ability to switch easily on the perimeter as long as they're at least adequately hitting their threes.