If by "long and convoluted" you mean accurate and with the appropriate attention to detail, then yes. Sylvanas' strategy outlined in A Good War wouldn't necessarily make the Alliance fall, it would simply prevent it from functioning correctly and was reliant on the status quo post-Legion to function. Those are significant details that shouldn't be omitted, otherwise, it gives the wrong impression of both the Horde's and the Alliance's respective military might.
That's an appeal to tradition fallacy - just because the Horde has always been the underdog doesn't require or even imply that it will remain so. The same is true of the Alliance being a passive entity that only responds to attacks and is seldom proactive.