This has changed in the last 5-8 years. They finally got agents that grew up with computers.
Have you seen malwareinvestigator.gov? They built an automated framework for pulling apart common malware and made it available to state and local law enforcement to aid in investigations. This is just one example of the "new FBI."
> information that feeds into the FBI is almost never disseminated outside the agency
I get a few intelligence reports from the FBI every week. Just because you aren't seeing it, doesn't mean that it does not exist.
> If we had an agency with a sole focus on cybercrime investigation and prevention prior to the 2016 Election, we would probably have a different President right now.
As much as you dislike Trump, I don't really think you want to live in a country where the IC influences elections. Remember that the FBIs job for the most part is to investigate crimes, not prevent them. Mueller will do his job.