> The fact is, 99% of programs need only one exception handler.

Maybe if you just write high level business logic and something else already handles exceptions for you. I think my Java code typically has 70% of the exceptions handlers that I also would need in Go. Need to close upstream connections, release resources like buffers, etc. If it’s not catch blocks, then it’s at least a finally block. And often it’s also a good idea to catch and transform an exception, so that the calling code doesn’t need to deal with exceptions that come from pure implementation details.