I rarely eat Thai food in the US. One main reason is most of it is way too sweet for my tastes, even at Mom and Pop Thai owned restaurants after I ask them for authentic Thai style. The other main reason is the substitution of ingredients, especially chiles. Jalapenos, serranos, and bell peppers have no place in Thai cooking IMO.

All that said, Pad Thai does tend to be a bit on the sweet side even in Thailand. Not something I order anymore.