Actually… Found the discussion: https://www.linuxfoundation.org/blog/blog/master-slave-and-the-fight-over-offensive-terms-in-computing-kate-conger-new-york-times-april-13-2021

It was the Internet Engineering Task Force. But not sure if this is what is being referred to in this case

Not sure what the discussion was, but, I recall they changed terms like Master/slave a few years back (maybe in the linux kernel), to make things nicer. I have no problem with this (not a big deal).