Recently stumbled upon https://learnbchs.org/ which I guess is kinda relevant to this trend.
I'm kinda annoyed by their attitude generally and claim of CGI scripts written in C being "secure" — writing a secure web application from scratch without something saving you from yourself already requires diligence, here with the added problem of most people being incapable of writing secure and correct C code.
The potential for certain use cases is there though. Just look at stuff like cgit which is just very fast thanks to low startup time and server side rendering.
I guess BCHS is BSD people wanting to be relevant and cool, trendy, whatever?!