Some letters aren't letters

[Emma May Smith]

Rene is specifically talking about the single-leg gallows here. There are quite different factors to consider with double-leg gallows.

I would also add that I think that the position that says o and a are necessarily vowels is badly mistaken: vowel identifying algorithms don't see them as vowels, so why do linguists persist in wanting them to be so?

Sukhotin's algorithm does see a and o as vowels. The outcome may not be strong, but that's a long way from what you're suggesting here.