I have had many "daisy" corals, and I find them even easier to keep than goniapora, which I find easy to keep as well. I know alot of people that keep them succesfully longterm, sure hes a respected authority in the field, but just cuz some dude writes something in a book dosent mean jack all.... do you personally know the writer??? have you personally witnesed his husbandry skills and routine, I would have to say that from people that I know, hobbyists can keep more things alive than a doctor or marine biologist, not in all cases, I dont belive everything I read...
Some hobbyists routines are considered extream and not needed, their livestock is usually very healthy, some marine studies are far from the hobbyists routine, both in a good way and a bad way...