Let's just say that that sphere of the software dev community isn't exactly universally seen as competent work, more like the orthodoxy of ~15 years ago that's now increasingly, and in my opinion rightfully, being put into question for its bad complexity and performance trade-offs when applied beyond textbooks and conference talks. And this is being diplomatic compared to others.
I'm certainly not saying there isn't something to learn from them though, I've read a bunch of them, but after seeing countless wasted debugging hours and projects devolve into a complete mess of patterns where you have to ping-pong between files, functions, and patterns providing little to no value is astounding. The option to do non-clever code is seemingly insulting to the self-professed architect, but it is in my own experience at least, vastly more maintainable and productive, not because it results in "clean" code - it's usually pretty dirty and nothing to write home about, but because reading even a page-long flat procedural function that's just doing its thing, is much more straight-forward than ping-ponging between some clever architect's conglomeration of decaying design patterns.
Having the "meat" of the code available with a minimal amount of abstractions/layers also makes it much easier to adapt according to performance requirements without having to propagate changes throughout half the application due to it being entangled in pattern abstractions. (on that note, it sounds like hmeh is trying to work around this problem with abstractions by doing a significant amount artificial partitioning. But that would be solving a mess you've created yourself in the first place). Finally it will still be dumb & dirty code a couple years from now, no need to have all those design patterns internalized.
People promoting these things will of course then just blame it on the dev and call them average, or lacking in experience, because they can't identify and combine the various clever patterns correctly, they "are doing it wrong", and that's where I believe the above narcissistic tendencies I called out comes from.