I’ll be frank. I’ve worked for some real dumb assholes (in the past) as have many I’m sure.
And several of these managers or leads fallen into one of these categories:
a) Dumb but very nice (should never be in a management or lead position). Got there from kissing ass or got lucky.
b) Dumb, overly nice 99% of the time, but blows up suddenly when things do not go well turning into dumb assholes
c) Dumb & Complete Assholes all the time
d) Smart and Complete Assholes all the time