[zzzcpan]

> You can't write go without using interfaces for I/O.

You can and people do that all the time. You don't have to use its standard library I/O APIs, even its syscall package.

I'm not disagreeing that Go is OO though. Its ecosystem is dominated by OO. But it's more like Perl in this regard, where you can spend years without writing a single line of OO code yourself even if you have to use other people's OO code.