I agree that research on some diseases has appeared slow, like cancer, which is an extremely complex disease. But that's one end of the spectrum that not many diseases fall into. The other end are new diseases that haven't been researched properly, which root causes could be quickly determined by professionals. And even more exciting is the potential for existing therapies/drugs not originally designed for the new disease, to actually treat it! For example, think about the possible drugs available to treat the NEW corona virus.
The special sauce in speeding up the operation is having professionals work on it. It's so much slower (10x slower) having us generate theories without proper testing, etc.