This is an odd response given the article calls at Google as having the gold standard for this, and I'm not sure there's any equivalent at all at MS? They push Flutter too
The gold standard are Smalltalk and Common Lisp environments, that people pushing Flutter tend to ignore on their marketing, as they ignored the existing work on Java and .NET ecosystems.
Maybe they mean internal at Google? Internal Google tooling is pretty hit or miss, especially with older products that are a patch work of different internal only Google stacks.
https://docs.microsoft.com/en-us/visualstudio/debugger/hot-r...
"Microsoft has been killing it over the last decade regarding dev tooling and experience" was a direct quote from the article.