> I think this is a great step in the right direction by node

I think it's the opposite. It will be a net negative, since people will now run TS by default without type checking. Wasting so much time chasing weird runtime errors - just to end up running the full blown TSC type checking again. They will also write very different TS now, trying to workaround the limitation and arguably very useful features like Enums, constructor properties, etc. This has real negative effects on your codebase if you rely on these, just because Node chose to support only a subset.

It's interesting to see the strategy now and to see people even gaslighting people into believing no type checks and less features is a good thing. All just because of one root cause - TSC being extremely slow.