Letter-focused explanations assumes (wrongly) that the Masoretic Text tradition (the Hebrew text printed in Bibles today) is the *exact* Hebrew text and *only* Hebrew text of the Tanakh. It is not. A comparison with the Dead Sea Scrolls reveals that, though most of the differences are minor, there existed different forms of the Hebrew text in the 1st century. So, for instance, this approach of counting every 50th letter and you get the spelling "Torah" (in Genesis and Exodus) or every 49th letter in Numbers and Deuteronomy and you get Torah spelled backwards, completely falls apart if there is one variant in a Hebrew manuscript. Plus, even this approach is inconsistent, for in Numbers and Deuteronomy, it requires skipping the first occurrences of the last letter of Torah (ה) in the book before beginning the sequence. In short, however well-intentioned such an approach might be, it is fraught with assumptions that are untenable.
FB Post about Pictographic Hebrew: Are there Hidden Codes in Hebrew?
https://www.facebook.com/writingsofchadbird/posts/820635239432200
Written by Chad Bird, 1517 Scholar