Leaving aside the fact that it’s the founder’s name, I was under the impression that in non-American English, coon was slang for racoon, not an ethnic slur. Which I believe was confined to the US. I realize Australian English is different than ours and England’s in many ways, but I’m surprised in a country with no native racoons only imported pets it would be a slur.
‘Coon’ is most definitely a racial slur in Australia - it may have come from the US, but it was adopted here as a slur a long time ago.
That said, renaming the cheese is ridiculous because the name was not a racial slur in this case - it was a man’s surname.