As to disintegration, well, obviously Riker's disintegration of Yuta, being unquestionably canonical, means that there are exceptions to Jarman's (unquestionalby non-canonical) assertion, assuming we don't dismiss it outright as pure bovine scat.
That's needlessly harsh. It was in an anthology edited by Marco Palmieri, and he specifically edited my story in the same anthology to be consistent with it. Therefore, it was presumably something Marco wanted to be the case in Trek Lit, and he was the guy in charge of a great deal of Trek Lit for a good number of years, including the formative years of the DS9 post-finale series. That's why it surprised me to see phaser vaporization mentioned in a DS9 novel that's in that same continuity. "Canon" is beside the point here, because we're talking about the Novelverse specifically.
Although, as I suggested, Starfleet could've changed its policy again in the interim between "The Devil You Know" and Original Sin. And the change could've been more recent than Bashir's line in "Devil" suggested, sometime in the interval between "The Vengeance Factor" in 2366 and "The Devil You Know" in 2375.