2. Obviously being an inconsiderate jerk is a bad life strategy, but it's easy to embrace 'unselfishness' as the reason for not pursuing your talents until you reach brilliance, or not maximizing your earning potential. Most people don't have the energy to live their lives in the service of others (becoming aid workers or whatever), but many dabble in a sort of self-congratulatory mediocrity. Also breeds an unhealthy resentment for the entrepreneurs and geniuses that propel our civilization.
3. Not caring about money/possessions, all the while enjoying the material comfort brought by your parents' or society's wealth, is a sure fire way to end up in a situation when you don't have that comfort anymore. At which point you'll realize that you really do care about money/possessions, because you can't pretend anymore, reality has caught up with you.
4. 'Judge not and ye shall not be judged' is another ridiculous notion. Obviously it should be 'judge, and expect to be judged' - which leads to principles and integrity. Of course Christians want you to have principles/morality etc., but simultaneously to refrain from pronouncing judgement on those that fail to meet these standards. This means the bad people get away with a lot of stuff, and also makes you timid and unsure about what's right. Nothing's anchored, everything's a case of 'who knows what I would have done in their shoes.' Undermines your own will/agency (just say what you would do in their shoes, or what they should have done), and self-esteem (your only a noble person because you have an easy life blablabla)
In short these sorts of teachings make you constantly unsure of your place in the world and encourage poor career decisions.