of course it developed from certian areas/regions/people, it is that passion that soul that is important to hear, not just over produced white boy chess records, blues, but what those people are trying to accomplish. the blues isn't about "licks" or any thing so cheap, it's about what those guitar runs mean, it's about why muddy waters chooses to play like son house and william brown. you cannot divorce the blues from itself, it's not possible. you can't just listen to one type of blues and expect to understand what you are hearing. the soul of blues is traced through time and history it is not formed by people at school, but by the fear and the oppression of soul and of passion. the blues is an escape. muddy waters sings about hard times. he sings about the levee and about his mistreatin' woman. but all of that, his entire soul is really calling out for the past, he is channeling the souls of all the blues before him and releasing it to the world as away to escape and understand his hardtimes he is going through right then. he is referencing the great blues men and women with his "licks" he's not doing it alone. that is the importance of learning about the genre. to understand the struggle that the blues is talking about, and that's not something undestood by just listening to chess records.
this quest for knowledge however, should not be something looked up or read about in any book. you can't study and learn to love the blues, but you must look into yourself and see these same connections that etta baker and al green and etta james and b.b king are making from their lives to the "blues" as a concept. this isn't as dogmatic as i make it of course, it is fine if this isn't your thing and that you just like good guitar players or whatever, the blues is here for you. but to say that you dont' think history is important to understand the blues is foolish and just young.