Popularity of a technology usually isn’t perfectly correlated with how good it is.
> let others continue scratch their head while others deploy working code to PROD.
You make it sound like when docker build arrived on the scene, a cross-language hermetic build tool was still a research project. That’s just untrue.
Therefore I would rephrase your remarks as upside: let others continue scratch their head while others deploy working code to PROD.
I am glad there is a solution like Docker - with all it flaws. Nothing is flawless, there is always just yet another sub-optimal solution weighting out the others by a large margin.