I also viewed the film from my point-of-view as a hospice volunteer. I have witnessed hospice guests doing what they can to put their affairs in order, so that they can pass in peace. This includes final interactions with friends and family members. In Luke’s case, putting his affairs in order included seeing family members face-to-face and saying: “I’m sorry, Leia” and “I’m sorry, Ben. I failed you.”
Dude. Please keep using your lens as needed. This is my favorite angle/insight on this yet. If the Blu-Ray was out I would have watched it a few days ago, and realized during this re-watch (which definitely didn't happen and is yet to happen in the future) that Luke went to Ahch-To to die, and likely Rey's arrival spurred him to a) acknowledge that things were going on out there and b) that maybe someone needed to do something about it, just not him, and c) that passing on at least some of the Jedi knowledge would be his final act.
Anyway, I can't wait until I can watch it again in the comfort of my own home, because I certainly didn't do that yet.
As you may have learned I am not of the filmmaker cadre, I'm just sort of the friendly ghost that haunts the forum.