I've been browsing the rest of 2L catalogue in Tidal and so far Magnificat is the only one available in Atmos.
If I were them, I would have a newsletter or something similar to announce every week the new releases. All this lack of promotion worries me, as the same silent mode can be applied to remove the Atmos track if they don't reach a certain number of clicks, just guessing
I just opened a support request asking for that. Specifying that I did subscribe TIDAL ONLY because of Dolby Atmos music making emphasis in full albums.