[grumple]

I think you are taking the weakest possible extrapolation of the article's position and attacking that.

This article is about changing techs for an existing product. And the author is correct; tech changes are very costly for existing products. You have to weigh the cost of the rewrite. Swapping out your markdown parsing library is probably relatively low-cost. Swapping out your web framework is potentially years of work for no practical gain.

Most of us aren't working on new things. Day 2 of a company's existence, you already have legacy code and have to deal with things that were built before.