Lol. Lots of f-bombs. Pretty unusual for you.
A fast riser? Sorta depends on what you mean. He started out as an associate with a big corporate law firm. It's the kind of job in which you make a good salary but work terrible hours and do pretty uninteresting work - basically the stuff that partners and more senior associates don't want to do. He moved from that to the US Attorney's Office. I'm sure he got paid less but probably had a lot more free time and enjoyed the work much more. Once there, I'm sure he did rise fast. He was pretty good at what he did. However, he didn't really become a political actor until Bush made him a full US Attorney (meaning he had a presidential appointment and Senate confirmation), and by then he had been with DoJ for a good 12 years or longer. After a few years, he went back to the private sector but with a much more desirable gig that pair him a fortune. Of course, after making more money than he'll ever spend, he became FBI director. So I'd call him a fast riser once he be scored his first political gig, but he did put in his time before that.
When Comey got fired, I got in touch with my FBI buddy. He's not a political player, but he's a senior official - worked directly for Comey and knows him personally. His take was interesting. He was a big Comey fan - thought he was a good director, a good leader, and thought he tried to do the right thing without regard to political affiliation. Interestingly, he hated how Comey got fired more than the fact that he got fired. (He also did not think Trump fired him to stop the Russia investigation.) Apparently, Comey learned of his firing while making a speech to FBI employees when the news of it flashed on a monitor behind him. Yep, the people he was speaking to got the news before he did.
The reality is that he's probably right when it comes to day-to-day work. Comey probably was good leader and probably did a good job when we the agency was dealing with rank-and-file bad guys. However, once he had to deal with a major political player with the power to ruin him, he didn't have the balls to stand up to her.
My position is that he should have done the right thing. However, he shouldn't have been in that position. The decision to prosecute somebody lies with the prosecutor, not his or her investigators or law enforcement officers. Loretta Lynch and her subordinates should have made the decision and taken the heat for it. Putting it on Comey was the height of "chicken shittiness." It was obvious to anybody with a brain that they were making their decisions based on their political agenda, which is why the case should have gone to a special prosecutor. Should have been a slam dunk, no-brainer decision.