However, the blog post mentions that "for them" performance isn't an issue. This should not be interpreted as performance being good. OpenBSD performance can only be described with data: https://www.phoronix.com/scan.php?page=article&item=8-linux-...
Even for something that the OpenBSD devs themselves are doing all the time, compiling stuff, OpenBSD is ~20x slower than Linux. 2x slower would be horrible. I really have no words to describe 20x slower performance. If you are a dev working with a compiled language, imagine a 20x perf hit on compile-times. Imagine having to patch LLVM/Clang on OpenBSD by recompiling it from source. "Apocalyptically horrible", "worst in class", do not even make justice for how slow OpenBSD is.