money trees does quickly recap the story up to that point (f***ed sherane, parked the car then start rhymin', home invasion), but that's not the main point of the song...the reason he doesn't say anything about BDKMV is because that song is more of a flash forward where he's talking about the present and it's not really part of the story
the overall theme of money trees is that at this point in time, 17 year-old kendrick would put money over everything, even if it means he has to do immoral things such as stealing to get it...if he had to choose between being poor and stuck in the streets but living a moral life or being rich but stealing in order to get there, he'd choose the money...even tho money will never make him forget the pain of losing loved ones ('the one in front of the gun lives forever'), it still makes life more comfortable