I have amassed a large body of real world projects under my belt over the last 3 decades and have used Go for 6 of those years. I've written some pretty interesting stuff in Go like file systems compiled against FUSE and compilers. Yet I by no means consider myself an expert in anything - least of all Go - as to do so would imply I'm not open to learning something new (even basic things I somehow missed during my initial studies). Despite that I still find it highly offensive and unnecessary for someone who knows nothing about me to say "you have close to 0 Go experience." when I've clearly demonstrated and described various Go-isms prior to his or her remark.
Edit: weirdly I've got more down votes for this comment than my last one. I guess some people think rudeness is acceptable. Sad times.