I did not like/see the real benefit of strict typing until actually using Typescript.
Now for me the more verbose code and extra typing is vastly outweighed by knowing what arguments the function actually wants, especially when using 3rd party libraries.
The time saved by real-time type checking in my editor compared to edit->run->crash->edit is almost unbelievable and the amount of errors in code I ported over that we did not come across in production is also huge.
So no, I think the visual overload is definitely worth it.