User blog comment:Allam948736/Last digits of tetrations - proof/@comment-35470197-20200212031655/@comment-35470197-20200217010450

Your updated "explanation" is still not a proof at all. Many of the issues I listed above have not been solved.
 * Write down a precise statement with full quantifications.
 * If you want to prove a statement X, then deduce X from valid arguments.