I agree. What's the game?
Am I correct in assuming there is an underlying track that denies spirituality wholesale?
I don't know what you mean by a "track," but there are members here who deny the objective truth of spiritual narratives wholesale. On the other hand, spirituality as a type of human behavior and as a quality of subjective experience are readily apparent phenomena, so few deny those. Feeling the presence of God, and God actually being present, are two different things; the latter is a hypothesis for explaining the former, but it is not the only one and probably not the most parsimonious one.
I regard spirituality, and in particularly mysticism (within which the practices of Scientology fit quite comfortably once the terminology is translated), as frameworks for attempting to cause changes in one's own consciousness in accordance with will. (Such changes are, by John Michael Greer's unconventional definition, what magic is.) A common problem with many such systems (especially in the west) -- definitely including Scientology -- is failing to understand the nature and inherent limits thereof, and thus persistently attempting to apply the same methods to cause changes in something other than conscious experience. The result is constant and repeated blundering into the walls of reality. The Scientology promise of mastery over MEST is, objectively, as false and delusional as a Latin language professor promising to teach students to cast all the spells in Harry Potter.
The other problem with mysticism, that Scientology shares, is that even within its own domain -- such as, gaining control over basic aspects of one's own behavior -- success is limited. If any system including Scientology could achieve even a crappy 20% long-term success rate in smoking cessation or weight loss, the medical community would be referring patients there in droves, and the government, driven by its spiraling Medicare budget, would be finding or making loopholes left and right to help it happen. Forget mastering time and matter or the mystic secrets of ancient Egypt, can you master your own hand enough to keep it from putting cigarettes or donuts in your mouth? It's harder than it looks, and much harder than it should be if any of those systems had the advantages (over, say, normal human muddling through life, gaining experience along the way) they claim to have. Small wonder that spiritual and mystical systems spawn narratives of remarkably persistent adversaries (Satanic temptation, demons, evil spirits, engrams, Thetans, matrix agents, take your pick) that can be relied on to get in your way no matter what level of mastery you've supposedly reached.
Respectfully,
Myriad