Bfs family driving me crazy help

So I have been in a relationship for about 9 months now and I am 100% happy and in love. I’ve known my bf for about 10 years before we started dating but the timing wasn’t right we either were in relationships with other people or not living in the same town but the stars aligned and we decided to give it a shot. It’s going very well, we moved in together, talk about our future and getting married, get along great with each other’s friends and family. Well, for the most part. My problem and reason for this post is my boyfriend is kind of a pushover when it comes to his family. I have never met or dated someone as close to their family as my bf which at first was such a green flag and still is, but they lack some serious boundaries and it’s been hard to sit back while my boyfriend gets walked all over. For a few examples, my bfs dad was in a relationship living in our current apartment a couple years ago, and it was TOXIC. So toxic that he went to jail at one point, and my bf took over the lease to save his ass from being evicted. Well I moved in recently, and have been here for months. Well one day out of nowhere my bf gets a call from our apartment manager that his dad, who has not lived here in years, went to collect his deposit that he put down for this apartment just out of nowhere. The apartment manager informed us that we now owed the 1200 on top of rent and that it needed to be paid within a couple months. When my bf asked his dad why he did this when he was the one that took over the lease to help him out, he just said he “needed the money.” His dad is an addict, and so is mine, so I have firsthand experience with a lot of what he deals with, but my dad would NEVER do that to me even to score some alcohol or drugs. ALSO my bf is the account holder for his family plan on Verizon. It has his brother and his gf, his dad and his gf, and his other brother. Without even asking my bf they have added iPads for their kids, Apple watches, other devices to the point where there is now like 8 lines. Apparently they texted him asking for the account pin to do “upgrades” and then just continued to add whatever devices they wanted. As if that isn’t bad enough, they STOPPED PAYING their bills for the last 2 months. They kept telling my bf they could pay “next month” well 2 months later my bf has paid 1,000 for all these lines when he only has ONE phone that he pays $80 for a month all the rest is theirs. When he asks his dad for his portion he just doesn’t respond. And His brother who just had a SECOND baby that he PLANNED told my bf he is struggling and asked for him to lend him money ON TOP OF THE PHONE HES BEEN PAYING because he just bought a minivan and moved into a new apartment they can’t afford. And my bf doesn’t even bat an eye! My question starts here because anytime I try to talk to him he just says I make him feel bad and that he DOES feel stressed about it and taken advantage of but that he just needs me to be there for him and not make him feel stupid for doing all this stuff for other people. But for me, I’m a fixer and coming from a family of an addict father and brother who did nothing but take advantage of me when I would do nice things for them (I put a car in my name for my brother who crashed it shortly after while on pills for one example) I just want to give advice and have the person I love not be walked all over. Yes it comes out as frustration a lot of the time but I seriously can’t help it because sometimes I want to shake him! Like this is the man I want to marry and he will bend over backwards to help his family who would NEVER do the same for him, and would literally go broke if it meant helping someone he loved. Like yes this is an admirable quality so am I wrong for being so upset by this??