One example is if I was using react it would be used to encapsulate a react-router Link and an anchor tag in a component, and use props to differentiate between inbound and outbound links.
And C# iterates at a rapid pace, with lots of language features being added, some of which would would not be possible in TS.
C# is in some ways less shackled by the runtime it has to target, while TS compiles away entirely. The CLR can be changed to suit .net/C# needs, and JS is not under their control.
Information saturation