I do not agree. LTAs are one of the best
types of anenomes you can keep. Yes, they can be sucked into powerheads if you place them improperly, as can any anenome.
LTAs need a deep sand bottom, good circulation, and moderate to strong lighting.
I have kept one in a 10 gallon work tank for 1 year and it is still thriving. The tank uses PC's (2 x 28watt).
They do prefer a clownfish which seems to keep them healthier. Sebae clowns would probably adopt a LTA, but the natural partner is a pink skunk clown. I have also seen tomato clowns go into LTAs although tomatos are very aggressive and not a clownfish I usually recommend if you have passive fish.
John