It’s interesting that all three of the people you mention are very concerned with performance, something most programmers don’t even think about anymore or think they aren’t supposed to.
Premature optimisation is bad, but there’s now so many devs who don’t do _any _ at all. They don’t improve any existing code, they’re not writing software that is amenable to later optimisation, inefficient architectures and unnecessary busywork abounds.
Are we surprised that years of “product first, bug fixes later, performance almost never” has left us with an ecosystem that is a disaster?
The fact that people don't stay long enough in companies or work on a long project themselves to see the fruits of their labour down the line is a point that is discussed in some of the other comments here in this thread. I agree with it as well. In general if you job hop a lot you won't see the after effects of your actions. And the industry is such that if you want to get paid, you need to move. To reiterate - it's a sad state of affairs.