Twins Paradox

Can either below physics.stackexchange thread (one referencing the other as already answered) provide a satisfactory answer?  Not to me.

https://physics.stackexchange.com/questions/620066/twin-paradox-in-sr

https://physics.stackexchange.com/questions/2554/how-is-the-classical-twin-paradox-resolved

The predictable "possible responses" to this Relativity Challenge are covered and additional Google searching turns up the same.  Truthfully, Relativity Facepalm satire begins to sound reasonable.

Lorentz Ether Theory (LET) and a universal coordinate system also sounds more reasonable: The Twin Paradox in Special Relativity and in Lorentz Ether Theory