This will be a common reaction in the coming weeks. The X sounds good on paper but physically, it's quite a smaller phone, especially due to the unusable notch and ears.
It's still good though, not just on paper. It has everything the Plus has from a feature standpoint, just in a more compact slightly smaller design. Just because it is smaller does not make it a lesser phone. Some people are all for that, just like some people prefer the SE size or the 8 size. The constant notion that because the X is smaller makes it not a good phone is comical. I love my 7 Plus, but I don't mind that it's smaller. I'd imagine the features of the X more than make up for a small reduction in size.