Yes, I have not personally seen any Kinfolk/Wolfblooded abuse other than in a house rules sense, and feeling left out of play. Mind, abuse isn't the critical thing here, I use it as it's a variant on a common RP bit, the friendship or romantic relationship.
My topic, the direction I am going in, is trying to get players to at least sometimes explicitly approach a scene as a chance to portray something specific, hopefully in a mindset where displaying an IC negative is still seen as an OOC positive. Show off that alcoholism, flakiness, cowardice, bullying, anger, caprice, arrogance, lack of direction, addiction, misplaced anger, and everything else! If you don't like playing that way forever, then makes scenes about explicitly trying to over come it, failing sometimes, backsliding, and still coming out better on the end. Meanwhile the players had something good to play through. Hopefully waving that giant flag (thats actually a game design term) will let others KNOW the player is portraying negative traits on purpose, and respond with their own less than perfect in character actions.
Anything to get players to stop trying portray perfect characters, who put up with nothing negative from anyone ever. (BTW the I don't put up with any shit" is a great trope to prove wrong, to backslide on, and so on). Anything to get people to stop worrying about coming out on top, or that others will shove them down if they stop trying to come out on top.
Unless Mary Sue RP is your thing. Usually can't do that with multiple perfect stars, but of that floats your boat ...
What I wonder about being asking too much is players being willing to share their scenes and the outcomes. Public logs, or hints at good and bad events in other scenes without it becoming a pride or pity party. A black eye and some dark looks, post-high jitters, just some signs so people see whats going on, again without invite the whitehat brigade.
ETA: if one player shows negatives things off ICly, and others don't go for a perfection based response, then maybe players will also get used to portraying characters who deal with non-ideal situations often, and they won't feel the need to KILL someone just because they don't toe a line utterly.