I'm one of those woolly liberals, so of course I think such punishments are both barbaric and wrong.
However, for balance, I believe it is for every Country (or, in this case, region) to make its own Laws. And people have to make their own judgment calls about whether to break Laws.
There's lots of Laws in this country (never mind Sharia or Trump Law) that I profoundly disagree with. There's lot to be said for trying to change repressive Laws. But if people choose to live in Aceh (as opposed to pretty much everywhere else in Indonesia-it is the only state to practice Sharia Law) then people need to modify their behaviours.
The big problem with so-called deterrents is, simply, that they do not work. Because very few Criminals seem to be able to factor in the risk of getting caught, and risk/reward. Typical example is Armed Robbery. I recall 4 men getting 14 years inside each for robbing a petrol station. For £200-between the 4 of them.
Against that, certain Arab States will say that there are not many 1-handed pickpockets
