They have 2 dates in the same city back to back, they couldn't have given one of those to a city in NY other than NYC? The rest of NY does exist people and NYC isn't exactly centralized for us.
But see, you act like it doesn't make sense to you. Two nights back-to-back because it's essentially a hometown show. Could they have used that extra House of Blues show for a NY date? Absolutely not. It would've required them to travel back to NY following all the CA shows. The whole point is for them to conclude the tour near their home.
Of course, it's going to be a west coast dominant tour because traveling will be easy for them. It makes perfect sense that since they're ending the tour in SoCal where their home is, they may throw an extra day in there.