Some boys do feel that there aren't enough male teachers, mine did especially when they were going through senior school, they have both told me they would have preferred male teachers at that period in their life after junior school. There was such a propensity of female teachers at senior school and at times it seemed there was an overall feminised slant to how some classes were conducted, that was a collective opinion not only from them but also their male peers and a consensus among the parents I knew who had male children. There were a handful of female teachers who made no bones about the fact that they would prefer to teach girls when my children were going through earlier years. Adolescent boys can go through a disrespectful mouthy stage, although no doubt they have their female counterparts, physically however the male of the species is prone to present in a more intimidating way, I'm not referring to mine, but I can think of a few hulking 6 footers aged 15 or so back then who could be quite threatening if thwarted. I think it's possible, not in all cases, that the right sort of male teacher might be more effective in dealing with all of that. Even if there are male role models in boys' lives mine certainly had their father present, I still think they need male teachers, more so I imagine if those male role modes are absent.
I have heard some male teachers are wary of being accused of sexual impropriety maybe that puts them off, or simply manhandling a very difficult pupil out of the classroom which can lead to a myriad of problems.
I imagine the ratio of male teachers to female teachers is quite low. In an ideal world we would have an equal balance of male and female teachers irrespective of their skin colour or ethnicity.