Worked with US teams most of my career (since '95 or so) and never had any of them complain about master/slave nomenclature in any of the software we used. I suspect that rather than being "common practice in the US", it's been common in whatever niche you work in or whatever part of the US, or even just in the specific companies.
Of course it might be I who've worked in such a bubble too, but given the number of people here who seem to find it annoying that people are even suggesting not using it, I'm inclined to believe the use of master/slave has remained more common that you think.
Of course it might be I who've worked in such a bubble too, but given the number of people here who seem to find it annoying that people are even suggesting not using it, I'm inclined to believe the use of master/slave has remained more common that you think.