What‘s rubbing me the wrong way is the author pitting against NodeJS/Typescript on the front page without real arguments. You can pit your framework against another, but show me how it makes my life easier in comparison. Argue with features and developer experience, not with personal opinions.

„and unlike a lot of JavaScript web frameworks, Spark won’t be deprecated tomorrow.“

Especially if you can’t hold your promise. Deprecations are a normal thing in every software driven by individuals. We lose interest, get kids, etc.