Much to my wholehearted agreement, you already pointed this out in your review of my other dodecaphonic canon:
"Although I have read from Taruskin's Music History book that counterpoint without tonality would be not too meaningful without the rules for dissonances and its resolution, but it is clearly not correct here. Given your ultimate care for preventing clashing dissonances, I find this one actually quite melodious and even tonal, or at least pan-tonal."
In any case I don't find Taruskin's assessment entirely correct, just as you pointed out, since care for the clashing and resolution of dissonances need not necessarily be strictly derived from the rules of tonality, but instead out of the composer's own stylistic preference. One of the greatest things I have thus far found true for the dodecaphonic tone row system is that it allows for an immense amount of diversity when it comes to compositional approaches, which is specially true for stylistic notions of what works and doesn't in any given work according to the composer's own intrinsic judgement.
In many regards I believe my usage and deployment of contrapuntal techniques to be the polar opposite of Schönberg's in terms of the treatment of dissonance, as in coining the term "emancipation of dissonance" so as to refer to his own proclivity towards unprepared and unresolved dissonances he was so proudly fond of, I believe he essentially stopped hearing dissonances as "ill-sounding" or unpleasant to the ear. For better or worse, my own particular stylistic preferences remain fairly attached to the etymologically quintessential definition of dissonance I just provided, independent of a tonal context. As such, my reticence towards unsing certain intervals has little to do with the standards conventions of tonal preparations and resolutions thereof, but with my own tendency towards finding intervals like minor 2nds and major 7ths quite distasteful to hear in clashing (though slightly more toolerable in suspensions), and also difficult to handle contrapuntally with my current bare-bones approach towards the general treatment of tone rows in my latest canons.