My recent experience lines up with the article's stated average of three months. But I would hardly call that "quick". I did close to 50 interviews, and some companies' processes took nearly a month, only to lead to a rejection without feedback.
I once applied for a really interesting incubator-within-telcom-giant role, which I thought would be a cool and unique experience. First red flag was it took about a month to just set up a phone interview, but I dealt with it because of how unique the role sounded. Then, after about two months, they flew me down to San Antonio for the onsite. They informally told me "You're a great match, we're going to get our ducks in a row and then call you with next steps!" Then... ghosted. After a few months, I gave up and found a different job. Moved my family across the country, signed the rental lease, and so on. Then, out of the blue, about a year after that initial interview, that telcom called me back with "Hi, [candidate], I'm calling to schedule a second interview for that [incubator] role. When would work for you?"
Beyond a simple rejection, never expect any feedback; just move on.
I've only ever gotten real feedback once (from Square) many years ago.