I can see this kind of over engineering in all the companies that hit the VC/IPO lottery. They all hire like crazy the best engineers and have to keep them busy

I can see this kind of over engineering in all the companies that hit the VC/IPO lottery. They all hire like crazy the best engineers and have to keep them busy doing challenging engineering stuff. And managers want to protect their turf so they join in. So you have ever more complex designs in anticipation of growth, side projects, detailed analysis, blogs with pretty graphs, etc. A combination of Parkinson's Law and Second System Effect.