Tahan did not claim she was the only one to have made a sacrifice, she acknowledged Tim and Boog also gave up a lot. She was more upset over the fact that in comparison she gave up more than the others such as Mikkayla, Ed and Jade. I didn't see anybody tell Tahan to give up her hair dryer, she went and got it from her suitcase and then Tim encouraged her to drop it in. She did take the initiative to go back to her suitcase and find things such as her hairdryer and family photos, whereas somebody like Mikkayla, who was probably more keen for the gourmet dinner, lingered in the background. Even if the items the others gave up are of sentimental value, they will eventually get them back and they won't have to wait too long either. Tahan uses her hair dryer and lashes often.
Tahan has had that hairdryer removed from her before, this is the third or fourth time (I haven't been counting exactly) so that would only fuel her frustration. The focus was almost entirely on her, even though Boog and Tim did agree that they gave up more than the others and I'm sure they did their fair share of complaining that was edited out or not shown. It makes sense that the show would be focused on Tahan since the hair dryer issue has been an ongoing saga. I must commend her for being able to move on despite her anger and feelings of injustice. She's not the type to cry or whinge often but when she does, she has a vent in the diary room and gets over it. The same cannot be said for others like Mikkayla or Tully when she was around, who carry things around forever and become bitter about it. I think Tahan needs to be given a break, she is human and like the rest of us, she did get upset over something that may be considered 'petty' and 'superficial' at a universal level. But it's not on that level so I think it's unfair and irrational to compare this to 'war, poverty and famine'. The only difference is that the entire nation and then some, get to view her tantrums and hence, the mass judging begins. Just think about how many times you've reacted like her, if not worse over smaller issues. Now add to that the pressures of feeling lonely, disliked, homesick and the stress of an upcoming eviction and surely you should be able to sympathise and empathise with Tahan.
Just my two cents.