OK I had probably skimmed too much but now I think we're just talking about different things here. I like your post, so let's give it another chance: https://news.ycombinator.com/item?id=18390030 :-)

Regarding textual logging, I think it works wonderfully and I don't think it's at odds with schema-ful reporting. One good way is to include error codes. Informal messages are at least as important. They are ergonomic to humans and their meanings are easy to look up with a web search.

Of course textual logging can always be supported by other means, like crash dumps.