Choosing an adviser based on the professor's past students' jobs I have recently been a admitted to a top 20 math Phd program at one of the schools I really wanted (woohoo!).  The reason I wanted this school is because I have been really into a certain research topic and, after a lot of "stalking" I found a professor at this department who's research interests matched mine really well.  Now that I've been admitted and am more seriously considering my working with him, I noticed that he's graduated seven other Phd students.  After a bit more googling I realized only 1 out of these 7 got an academic job and even this job was as a lecturer at a small liberal arts college. The others got jobs in industry (rather high paying ones so good for them).  

My question is as follows: Is this evidence that working with this professor would make me unlikely to get an academic job involving research (post doc, assistant professor, etc ..) after my Phd? 

This guy's research is dope and I really want in on it, but I also have to take my future goals into account.  I'm pretty ignorant on the process of getting academic jobs so any extra information or clarification of any misconceptions it seems like I have (in addition to an answer to the question) would be of help.
Perhaps the jobs they got are what they wanted to do - I doubt they were forced into them...

You will decide what jobs you will apply for which determines where you are likely to end up.

Are you using the term "dope" as in Dopey one of the seven dwarves or dope as in a drug ie not necessarily good...