How any of these developers can call themselves engineers and still look themselves in the mirror is beyond me. An engineer's job is to design the most efficient structure in as little time, and cheap manner as possible that still produce a reasonable and satisfactory result. What all modern web apps have in common is that they cut all corners on development time prior to release to then be forced to optimize the hell out of the mess afterwards in perpetuity. A simple tech stack would accomplish the same tasks with minimal extra initial development time and effort, but would remain performant for a very long time.