What systemic problems are there that have anything to do with the tech stack? Stuff is fast, featureful, and incredibly secure considering the attack surface is basically everything every person does. The content and applications are the main issues, the tech behind it all is pretty great and getting even better now that industry is finally learning to not tolerate unsafe languages and tools.

I've never in my life done anything that I feel standard languages aren't a good fit for.

I do think Dart deserves full best practices status, because the tooling and ecosystem around it is fantastic, and because it doesn't have a bunch of "Outside the paradigm" stuff, it's all things you can learn in a week coming from Py/JS/etc.