The Passions are still around, but without avid followers they are pretty weak. It's kind of a symbiotic relationship with Passions: Passions spring forth from a set of metahuman emotions/impulses, metahumans emulate Passions to gain power, Passions gain power from emulation/worship, metahumans emulating Passions gain greater power...and so on. Without active emulation/worship, the Passions weaken and wither away.
However, there is evidence that some are still around in some form or another (take a look through Harlequin's Back for an example in the fluff). Given how cautious dragons can be, it is unsurprising that they don't set foot in Egypt.