I definitely agree that many newer languages are strongly inspired by Scala, but I don't see a strong argument for why to choose Scala over one of a newer hybrid language. My own intuition is that these newer languages have had the benefit of being able to learn from Scala's mistakes. A lot of them have intentionally sacrificed some of the Scala's flexibility to be easier to learn and use.
I found Scala to be an extremely enlightening language: it taught me a lot about functional programming. But, the complex type system and the sacrifices needed to ensure Java compatibility entail many quirks that I find frustrating. I think it's actually a similar dynamic to what you mention: "retro-fitting these features onto an existing language never fits quite as nicely as a language that was designed with them from scratch."
BTW, I am a huge fan of your writing: the Principle of Least Power is a sacred programming text to me .
I found Scala to be an extremely enlightening language: it taught me a lot about functional programming. But, the complex type system and the sacrifices needed to ensure Java compatibility entail many quirks that I find frustrating. I think it's actually a similar dynamic to what you mention: "retro-fitting these features onto an existing language never fits quite as nicely as a language that was designed with them from scratch."
BTW, I am a huge fan of your writing: the Principle of Least Power is a sacred programming text to me .