Great big YES. These girls do not appreciate having their feet wet at all. I wouldn't even try it by using a thick layer of gravel at the bottom of the pot as I do with other plants, she's that touchy about too much water.
yall must have some shitty plants that get messed up by nothing. I dont have any holes in the bottom of my pot. and its big and bushy and green as can be. so i say it is now an absolute must have. bu for flushing i would put some holes in it.