Despite the vast difference in size, Hobbits have learned to defend themselves
somewhat better against Trolls. It is still recommended that Hobbits pay
attention when fighting huge, sun-hating abominations, lest they be snatched
and stuffed in a sack for later consumption.
In other words: Hobbit vulnerability to Trolls has been decreased but not
eliminated. Sorry to disappoint Trolls, but Hobbit-bagging has not been
Effective next reboot.