the thing is, the list is supposed to be all of DDD's opinion on who the greatest hip hop artists of all time are, not one prick's who thinks scarface is the 10th greatest rap artist of all time
Umm, actually no, it is NOT supposed to be a consensus opinion. The editor is, and always has been, the one to define their list's criteria and set the rankings based on that. Posters however have always sought to usurp that power and make it into a voting booth.
Personally I don't agree with Scarface being in the Top Ten either, but would choose to argue it based on the criteria at hand, because that's the only way it would get changed, not make a personal attack on Todd for putting him there. You're not gonna win that battle and all it's going to do is drag down the discourse on the site which makes DDD a less desirable destination for everyone.
Ask him why he made that choice, give your own breakdown using the criteria of the artists around that range and be respectful for the job he did in getting rap the credit it deserved on this site in the first place and maybe you'll get somewhere.