His conclusion is that we blame our tools for our own shortcomings and that rather than inventing new programming languages we should learn how to be responsible. This is FUD tbh, he doesn’t discuss any new language which are not old languages in disguise (i.e. he talks about go and kotlin but not idris and rust) and then he uses this omission-strategy to ‘strengthen’ his argument.
Cobol may very well be the perfect interface-philosophy for a programming language but that doesn’t mean that there is no merit in improving the internals of our most fundamental tools. I think the 21st century will bring massive advances in the practice of programming as our ability to leverage theorem provers grows.