The point is it's a item that holds your slot with a timer, so when you get it you get both an item with very limited useabilty and a lock that almost garentees you'll miss the next line of items. In other words, that item is now like getting 2 coin items in a row except for on a few levels. It's just stupid.I thought golden shrooms were horrible to get at first but once I got used to not spamming them I don't have much trouble with them anymore. You just have to get used to only shrooming in "safe" stretches and shortcuts and stuff and not worry too much about how much boost you get out of your golden shroom.
EDIT: And once you get better at lining things up there are a lot of safe spots.