I just took it to mean it's sketchy downloading and running a binary from a forum where you don't speak the language. You have no idea if the vibe on the forum

I just took it to mean it's sketchy downloading and running a binary from a forum where you don't speak the language. You have no idea if the vibe on the forum is friendly or hostile, if the first response to the post you're downloading from is someone saying "Hey, thanks for the great work as always!" - or someone coordinating an identity theft scam - or both! I think because of the abundance of expertise in low-level machine language there, many cracked deDRM'd binaries or patched executables for abandonware games come out of Eastern Europe, hence the association.