No mention of development times, nor how
they came up with 1:23.
It will never be fine grain, of course, cuz that
80 grams of sulfite is spread mighty thin.
Probably very high acutance.
The amount of film and time developed and the solution
volume would give the whole story. Dektol is a carbonated
metol hydroquinone developer with sulfite. Likely at that
dilution, 1:23, compensating development predominated.
Actually, John develops film in diluted Ansco 130. I occasionally do so, as well.
I have developed several rolls of 35mm TMAX-100 in Ansco 130 diluted 20:1 - one shot developer use with minimal agitation. I also tried it at 10:1 - it worked ok, but I found that liked 20:1 better (more compensation effects).