wow .. are You aware ... there are various aether field theories, tho that dont means they are workable ... mechanistic cosmology is tied to atomism not aether as workable ,,, cartesian systems are closed systems that adds to mech.cosm. ... in such setup, as was pushed by the 19 century scientists that was not functional aether field theory, coz whatever dynamics in such setup is chaotic not fluid, there the medium is just assumption that dont work!, thats why aether was rejected and atomism was enacted!, as I've said go ask physicist to explain, coz You grasp something but not everything!, You can ask in reverse, why at all atomism would emerge mids mechanistic cosmology, were then those scientist stupid!?, simply mechanistic and fluid dynamics is completely different approach, close cartesian and open noncartesian systems also, add to that that someone was trying to bring hollow earth theory by such approach and voila its not workable, thus it was rejected like wrong model!
- I gave practical AFT model noncartesian with fluid dynamics, and just then after by expanding earth theory logic we can say there are very huge caverns beneath the earth, still not hollow earth [1-3]
so no, You dont read me obviously, I am answering to Your chitchat, didnt went in some peer'review'vibe of the OP substack essay ... take my word, now, after some time going forth and back about this lost'tribes'hype I am certain its word for dream'alike'hallucination 
yeah astral strolls or lucid visions can be very vivid thing [2-3] how else popped up mythology, this would be simply mormon one, one among the many other actually, eg. not just around the golden'plates'hype as some trendy gold'rush'story'motive appealing for those times, but many other too caried by the very same atmosphere in mormonism, luckily many are now rejected [3][3] do You see pattern!?, but yeah, go reject the roots, i.e. JosephS plates and tribe hypes will evaporate last and with it mormonism too, and that for many simply just from belongingness and habitual inertia will maybe never reveal!, go tell to amazonian tribes come live our way of life, many for sure will refuse, and are, thus dont worry mormonism will not disappear, actually scientologists can occupy it, in context of revival of the last 3rd footnotes, coz their joint is in total meltdown!
- inventing denomination by visions is risk beyond imagination [4][5-4] so by all means very wrong approach for Christians!, simply coz stupid reinventing of the wheel in this case can make only extra harm as constant doubt position for the faithful in Christ!, especially if true the assumptions about freemasonic vibe among mormon elites, surely where is smoke there is fire too, so combine them both and we have ultra apostasy before us ...
I'll just apologize to mormons dont take this hard anyhow, my aim wasnt to drop in some negating mood, still once stumble upon all this hype, wanting or not drop by drop came to such debunking flow, what eventually should be honest witnessing and warning to fellow Christians wherever whoever they are, to remind them You are in apostasy, but as I said I am not theologian nor apologist so dont take my words for granted, but go ask for clarification eg. by JayD or other Orthodox Christian Theologians ...