Using fashionable tech X is not bad on its own. But without the "why" we have no clue what the author's reasons for the given choices are, and how the end results align with the initial reasons.
Lots of small businesses have driven themselves off a cliff basing their tech choices on what their employees would "enjoy" most. It's a good reason to code Go in your free time, but not to migrate a company's infrastructure to it.
It's very strange to see that you wouldn't want to know "why". Maybe you're smarter than all of us.