Even if this new thing has slightly nicer syntax or usage of promises or whatever, does this alone justify it's existence? Learning all this new tooling and eco

Even if this new thing has slightly nicer syntax or usage of promises or whatever, does this alone justify it's existence? Learning all this new tooling and ecosystem all over again? Dividing the web development ecosystem even more? I really don't see how the problem it's solving is big enough for us to care really. I mean - enough already. In 8 years I'm sure Ryan Dahl can come up with an even better runtime written in Grust, will we then all be migrating our codebases from Node -> Deno -> Dynamite?