@inthehands years ago, we had an internal system made in XHTML and other vanilla stuff. Did everything we needed it to, and boy was it fast. Rewrote it in Angular. Not so fast, buggy. Backend was simple, though. Rewrote it again in React, on cloud serverless functions. Does the same thing as ye olde version, but suffers performance issues due to its architecture, is difficult to work on, etc.
I absolutely don't understand chasing complexity.