Yeah, the article comes off as needing so much context that the article itself is sus. Like

Hejlsberg stated the obvious when saying that TS isn't the fastest language. Although it can laughably run Doom at 0.0000009645 fps.

… which is referencing an implementation of Doom in the TS type system. It's a funny idea, but an arbitrary reader who doesn't know about that and doesn't bother clicking through will get a very wrong impression.

The reimplementation (which they've done partially automated; Go apparently lets them do a very simple translation while Rust or C# would require more work to fit) should be a boon for TS devs, but not noticeable for those who just run stuff that happens to be written in TS.

Would be kinda interesting to see the effect if stuff targeted deno rather than node, though.