I think you're hoping for something that will never happen. You're hoping, even secretly, that the ST will somehow be erased by "this" Luke. That any new content with him will wash the bad taste of the ST from your mind. Until those movies are erased (and frankly I doubt they ever will be) no matter what they do with Luke, he still ends up the coward from that trilogy. That's my point. If continuity matters to you, you'll still arrive at the same destination. This point seems to be lost on a lot of fans, even those I am in agreement with about the ST as being utterly worthless trash.
That said, as far as my love of the trilogy goes, it took me some time to recognize what specifically I wanted from this content. I read most of the EU back in the 90s because at that age I consumed anything Star Wars, but I've outgrown that type of fandom and having more doesn't always equate to fulfillment. Then I watched the Prequels, and then gave TFA, then Rogue One, then TLJ a chance. That's when I cut my ties. I skipped the rest. So I put my money where my convictions were and sold off what little official merchandise I had other than a few essentials.
After constant questioning from well meaning friends I gave Mando a shot. Season one showed real promise, and then it became cameo of the week. It wasn't for me because they weren't willing to believe in their original characters enough to let them stand on their own, which is why I even gave it a chance in the first place. You ask, how I could live with myself and not feel like a hypocrite? I got to see it for free. I didn't give Disney a dime, and when I saw what was coming down the pike I just said nope, I'm good, and left. People truly understimate the power they hold as consumers.
So you ask, why would I bother posting in the forums if my fandom is "done?" Just because I only like the OT and the story is over, it doesn't mean I shouldn't stop loving it. Nor does it mean I can't have an opinion on something I'm passionate about. Plus writing and intellectual discussion is how I process information, and I get to talk with friends so that's a win in my book. Star Wars has never stopped inspiring me and just because the story ended (for me) doesn't mean that inspiration ended. In fact I think that's what everyone has been chasing since. Inspiration.
Ultimately each person has to decide what they want from their content and how each person defines their "fandom" is going to vary. I just feel that we need to be honest with each other and more importantly honest with ourselves.