It seems these days that every person who does weird things is bi-polar. Get caught screwing the neighbor?? You are bi-polar. Shave your head, bi-polar,I think a lot of bad behavior is excused simply by claiming to be bi-polar.
I think bipolar illness is being overdiagnosed these days, whereas back before the 1970s or so it was underdiagnosed and schizophrenia was overdiagnosed.