Not at all. If the Thinkpad were actually a better computer, then we would have all bought one over the MBP, including you. There is a reason you are here. You are here because you know the MBP is better, or you are here to troll with your only argument being "I can spill liquid on my Thinkpad". The rational folks just choose to not be so clumsy.
No one says that the Thinkpad is a better computer (which it is not, it is horrible, I have one for work), but this one feature to deal with the spillage problem is a nice design and would very much fit the clever design choices that Apple usually makes. Take the Magsafe as an example. One could also argue why do you need to put a magnet there instead of the classic plug on other laptops? Just don't be clumsy and ensure you always unplug it properly before you move it and don't trip over the cable. Still they did it to avoid damage on this typical laptop weakness. Same with the feature that detects a drop of a laptop to save the harddrive. Yes, we should not drop our laptops but it happens, and so spillage happens. So why not protect it?
Just my 2 cents...