Floral tea dresses have been a thing for a long time, but the midi dress with voluminous skirt or tiered skirt is a recent thing. The material isn’t the issue for this dress being dated, it’s the cut. You could get that fabric on a different cut of dress and it wouldn’t look quite so dated - but it’s going to take a few years away from floral midis everywhere to make floral dresses in other cuts to go back to being a neutral.
I always think when something that is normally a “classic” or “neutral” suddenly becomes a big trend, it needs a couple of years gap to go back to being a neutral/classic, and/or needs styling differently to stop looking like you dressing for an era at a fancy dress night.
(Breton tops are another one that comes to mind, was just one of those things some women had, then every where you looked women wore them with skinny jeans and ballet pumps and then they stopped being fashionable, so looked dated. Now it feels like they’ve come round to just being a classic.)