Is performance that much of a big deal for most people? In a world where Ruby on Rail exists I find that hard to believe. Server are cheaper and vastly more powerful now than in PHP's infancy, I'm sure that for the vast majority of use cases PHP's performance (whatever it is) is good enough.
The infamous "Fractal of Bad Design" wasn't about that, it was about the ridiculously inconsistent and error-prone API, the insane defaults, the counter-intuitive behaviour of '==', the headless chicken development roadmap where maintainers would add features because they were popular in other programing languages without trying to figure out if they had their place in PHP,...
Surely a lot of this has turned into technical debt? Even assuming that "modern" PHP managed to come up with better ways to deal with all of this, I assume that these obsolete functions and operators still linger for backward compatibility? If so how do you avoid them?
Again, I personally don't really care, but if you want to win new converts who haven't been as scarred by PHP as I have been I think that's where you should focus your efforts. Maybe somebody should write a point-by-point rebuttal to the "fractal of bad design" article?