2x2 wifi, so a bit more limited in that regard than the others.
I'm not sure what you mean by "2x2" wifi, but I've heard it is slower than the Touch Bar models. Though, I do wonder if that is noticeable in average daily use.
The non Touch Bar is definitely more limited and has lost a lot of its value on the market. But it's still a good machine and its not worthless. I have a 2016 2.0/512/16 non Touch Bar with Apple Care and 76 battery cycles. I would hope to get at least $900 for it if I sold it now.