So to analyze your points, one by one . Academically, not "personally", here goes :
... I agree, IF you provided any factual(not circumstantial or supposed) counter arguments to the points raised.. ....
This seems to shift the burden of proof on a skeptic. To get him to try to prove it's
NOT there. Seems to me that the burden of proof would be on the claimant's side. To show it IS there. Right ?
... Everything is subjective! I never said "all interpretations are equal". Yes people make mistakes ON BOTH SIDES. That doesn't change the physical evidence presented.....
Ok, yes, I got you now: "Interpretations" are (yes) "subjective". But we both agree that truth (ie.: the *correct* interpretation) is NOT subjective. I think we both agree on that. I thought you were trying to say that because a skeptic had an opinion or interpretation, that it was, of necessity, not necessarily "valid". Since it was only an "interpretation". But it sounds like we both agree now.
... You haven't provided a single counter explanation. Not one. All you have done was speculate and suppose and mainly try to discredit the argument and not the presented evidence......
The trouble with the "presented evidence" (that claimant's/believers point to) is that it's basically "pointing back to the legend itself". As being "proof of the legend itself". Eg.: fibers, drains, gold links, etc... Are all just "pointing to the legend" as
"proof of the legend". See the circularity of that ?
And when any skeptic who tries to explain away any of these salacious details (believe me, many have tried), is that it immediately descends into a game of wack-a-mole

Example pages and pages of debates on coconut fiber buoyancy, whether or not that part of the story "evolved" into the legend at later stages, whether or not there could be other reasons it's there. How many slaves can dig how fast in xx period of time, etc... etc...
And let's just cut-to-the-chase and assume all the salacious details WERE true (gold links, strange lights, eerie out of place triangles, fibers, the fabled stories of the boys, etc...). Don't forget : All treasure legends are 99% true. None of them ever started with "Once upon a time". Instead, they are all based around real names, dates, and events. So a researcher can prove 99% of them to be utterly true (names, dates, etc...). Leaving the skeptic to look mighty silly, right ? But this fails to take into account that : If there's no treasure (ie.: the last 1% of the story), then what does it matter about the 99% that's true ? And/or can't be dis-proven by the skeptic ?
... No it doesn't validate if it is true. However, they believed in it enough to die for.......
Well, if you acknowledge that it "doesn't validate it's true", then the second sentence become inconsequential to the discussion. People have died looking for lost dutchman, yamashita, etc.... People have died at Jonestown for something they sincerely believed in, etc... We can both agree that "effort" and "sincerity" (to the point of death) does not validate the truth of a notion.
... Faith and belief are never objective........
But if they are "faith and belief" in factual matters, then those factual matters, themselves, are objective. As in : Objectively true. To "believe" in something, is not to be construed that the thing you believe in, can't
also be objectively true, if the faith and belief is in a true and factual thing.