iNot sure what you are asking is that true about. True AZ Reptile site says lots of things are safe for tortoises (it's the longest safe list I've ever seen) that others say don't ever feed. Tortoise Eating lots of Wisteria plant for 2 days with no effect did happen also. I too have been...
I agree with you better safe than sorry, and some of the alarm for us newly caring for tortoises is the confusion on information. Too much is at least enough to read and find out some things. Figure out what learning and a bit of our own common sense can tell us. But like here it says never feed...