Bjorn was an entertaining asshole, I thought. I enjoyed him while he was around; thought his personality was sketched out effectively by the script and by Fearn. Felt every bit like the sort of unscrupulous, clownish, narrowly-lovable-despite-abundant-flaws type you might end up having in your social circle as a younger person. He was kind of nostalgic, in a weird way.
"One of the most hateable"? He doesn't really provoke that reaction from me. Bjorn was just a down-on-his-luck young man. His unrestrained hatred for androids and other emotional regulation issues make sense given his circumstances (if he was living a life of privilege where he had access to plenty of mental health resources and refused them, then I might think different), and I don't particularly care about who he happens to be f**king, as long as everybody agreed to it.