There's a _huge_ difference between a toolchain bug and a compiler bug. It's not really a slight inaccuracy.
> More interestingly, which other statements are wrong?
"""I switched to the x64 version of VS Code and installed quick-lint-js from the VS Code Marketplace. The buggy squiggly appeared! I successfully reproduced the bug.
Conclusion: The problem was specific to Windows x64 builds."""
The conclusion here is quite a stretch - the author has _not_ confirmed the problem is specific to x64 builds, they have confirmed they can repro it in x64 builds. The reason I call it out is because the author _is_ careful to differentiate between hypothesis and conclusion in the rest of the blog post, so this is either a copy error or a misunderstanding on their part!