Gosh no - our two cats adore Dreamies! I have never known them turn up their nose at any flavour - I never remember which flavour they have anyway because they love em all!
They do however shun the pouches they usually love after they have gorged themselves of roast chicken and other delicacies.
Maybe your cats need to develop more of a hunger? Maybe they're just not hungry to turn their nose up at Dreamies. Or maybe - just maybe - they are like ours, a wee bit...(shhh keep your voice down)...spoilt?
Your cats could therefore be suffering from FTS - Full Tummy Syndrome. Not a cause for concern and readily cured by a bit of exercise and smaller portions at breakfast!
Merry Christmas all!