> Have other people observed the sentiment the author observes around hackers being less common?
I've seen it as well.
I don't agree with what the author says are reasons for it. They just don't fit.
From what I've seen, hackers (in the truest sense) don't advertise. They have deep knowledge, but you only find how deep when you get into discussions with them, and most of the time they have no goodwill to engage in that because of two things, people who are dunning kruger; and social media.
Many of the learning paths have also been removed and are harder to find, the internet used to be freer than it is now. You have companies that dictate what stays up simply by using the court system as a coercive measure. The recent Quad9 thing shows just how bad this is getting across the board internationally. Copyright is being used to coerce, compulse, and limit actual innovation.
Hackers used to get by with their skills via certifications and jobs, many times they can't get certified now that only a single company handles testing in most places. I can't tell you specifically how they fail you, but its certainly not based upon whether you just have the knowledge.
The number of real hackers out there are significantly less because there has been less opportunity, and less resources that are easily found to get into it.
Many have worked very hard for their knowledge and some volunteer and help others, but there's an active trend to harass those that contribute like that, and volunteer psychology says you stop giving when it starts costing you. Dealing with a high number of deceitful people leads you to test them before providing any goodwill. If the hacker's don't like what your response implies they don't engage, and you are none the wiser.
Its not about life grinding them down, there are a lot of intelligent people who have stopped giving back because they see what providing that support is doing for society in general, its going in a direction that will inevitably fail because life will be intolerable, and volunteering is at a much higher cost to them personally than it ever was before.
Its like that adage that most people know, what you do in small things that don't matter shows what you will do in large things that matter. If you lie cheat and steal in friendly games, do you want them managing your company's finances? A smart person wouldn't.
There are also a lot of crazies out there that are really indoctrinated now too and they don't even realize it. They like the idea of something, but ignore everything else that would be needed to make it work. Completely irrational in some cases and can't even reason or think critically. Its sad.