please explain this to me

flake (PERSON) noun [C] MAINLY US INFORMAL
a person who you cannot trust to remember things or to do what they say they will do, or someone who behaves in a strange way

flaky adjective MAINLY US INFORMAL
behaving in a way that is not responsible or expected


SYNONYM
dodg·y adj.
Evasive; shifty. Unsound, unstable, and unreliable.

people in this city are so incredibly unreliable. i. don't. get it. they say they'll do something, then cancel last minute, fucking you over. they'll play hard to get about making plans. why is this. why do they think that flaking is ok? is it because their parents didn't raise them right, or is it another byproduct of living in the city? i seriously think i can count all the times i've flaked on two hands, if that. solid people are so hard to come by.