yes, exactly, abnormal appearance often is a reflection of bad genetics, but hiding it can be similar to lying and yes you might look better and feel better about yourself but it's all fake.
I feel as though those who look odd are actually perceived as smart
Yes I agree that people who look a certain type of unconventional can be perceived as smart, I suppose that is due to the pop culture nerd sterotyoes. I don't know if what I said about matching intelligence with beauty is what really happens but I think my theory makes sense.
I remember when I was about 14, one of my school friends said something along the lines of, "have you noticed how when a good looking guy gives a speech in assembly, everyone agrees and believes him but if it is an ugly person then what they say becomes a joke". Something like that, he must have been very perceptive for his age.
Anyway the point I was trying to make is that you seem to suggest that it is frivolous to alter your appearance, I disagree. Taking aesthetics aside, you have functional issues which this surgery could solve. Jaw surgery is not painful, you are given painkillers when needed but of course there are risks like losing sensation of lips.