>Go likes it's superficial simplicity, syntactic irregularity & stubbornly refuses to accept that PL design has evolved since the 80-90ies, but I'm sure it's appealing to people who are used to languages from that era.

Not really. The largest proportion of Golang users come from relatively modern interpreted languages like Python and Ruby which arr widely used in server environments. I'm unable to find the survey results but I do recall this trend surprised the Go's original authors who were originally seeking to replace C++ & Java