No

If this surprises you you are not well informed.

Why people aren't outraged by stuff like this I have absolutely no idea.

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completely agree. I'm not going to raise a stink if a project uses something other than master but I will continue to use master.

I like this article but this is actually a good point. "The rich" is mostly used in a negative way.

I'd argue this is because most attempts to reduce large groups of people to an idea like "the rich" or "the poor" are done in bad faith.

A support of this would be, within academic sociology or economics these terms will be used in a non slur way and it's because they actually have a reason to be thinking in terms of these groups instead of throwing them out as stawmen for some argument