Here's a fun quote from the interview you posted:
Yes. The Greek government is effectively carrying out ‘linguicide’ on the Macedonians of Greece.
I thought most "Macedonians of Greece" only spoke Greek? Isn't he referring to inhabitants of the region of Macedonia, who've had their own regional affiliation since before Slavs came to the Balkans? No, he's talking about FYROMians, great. That's not a biased view at all. He didn't even feel like including the word "Slavs." One of my ancestors was a Macedonian (Greek). He lived before FYROM was created but I guess he shouldn't have been allowed to call himself a Macedonian because it would offend some delusional Bulgarians.