I do not hate Euphyllia but softies are making a huge comeback and I agree they are under appreciated..
You are right people think all softies grow fast, have no color and are beginners corals which is false. Yea some species of xenia are weeds. They are a diverse group of corals just like all. It is like goniopora back in the day they were thought impossible to keep but that was just because mostly they brought in was goniopora stokesi which is still hard. Same with soft corals got a reputation because what was available at the time.
look at marine Farmers purple and yellow stereonepthya. Man it is insane:
www.marinefarmers.com
Some of the most sought after corals right now are weeping willows, Koji Wada Pink Nepthea, Japanese toad stools, pink Japanese nepthea, stero's, Neon green toad stools etc.
I think it is because there are so many other corals and sps and there really is nothing new. They are loosing there appeal because it is allot of the same corals renamed over and over again.
People moved away from softies for a long time which has made some of them pretty rare. FijI is exporting softies but not to the states which makes them harder to get. I have just been noticing a trend lately. Allot of Youtubers are now talking about softies too.
I think we will see the popularity rise in soft coral as some people want to be different. Not everyone follows the heard. I think NPS corals is another thing that will rise as some want more challenge too.
One thing I have learned being in this hobby for nearly 35 years is everything goes in cycles. Who ever thought mushrooms would become popular. You could not give them away for a long time and most avoided them at all costs. If 15 years ago I said mushrooms would make a comeback people would have said your nuts.