The problem is that they bring up a real issue in a dumb way, and in so doing, actually harm the cause instead of helping it. Having a bedtime is not the root of people's problems so I personally find it valid to criticize their self-righteousness, because people tune out when online leftists complain that their brilliance is unrecognized.
To say nothing because the general vibe of their tweet is good is the sixth type of liberalism. Though, criticizing behind their back over here on Hexbear is the second type, so I guess I'm a lib too.
That said I basically agree with you about the importance of highlighting the particular flaws of capitalism in order to increase consciousness, and also that we shouldn't be hung up on aesthetic.