>>95944527 (OP)Because it was a perfect storm of coincidences.
During the early days of Magic, there was basically no art direction. Artists were commissioned to do pieces; design team would turn them into cards afterwards. Sometimes the artist knew the name of the card, sometimes the color, sometimes nothing. Whether the name inspired the art or the other way around doesn't really matter. The art may invoke European Christian imagery, but an American audience only sees/knows Klansmen. The artist being a self-admitted neo-nazi doesn't help.
The coincidence wasn't that, though. Cards were entered into WOTC's Gatherer site in order of publication. Invoke Prejudice ended up with a Gatherer # of 1488. No I'm not kidding. For those not aware, 14 stands for "fourteen words" (a Hitler quote) and 8th letter of the alphabet is H (so 88 is "Heil Hitler"). The number has been used by nazis, for example in tattoos, to identify themselves to each other in more subtle ways than with symbols like the swastika (though there are more subtle "norse" alternatives there too). This would have stayed within those communities if not for two things. One, the general shitshow that the last decade of US politics has been, which made these things more public. And two, the ability to link to a Gatherer card page.
What happened was that nazis started dropping Gatherer links in online communities, some of which were used for recruiting into "more hardcore" places. That's the real reason the "Hateful Seven" got hit - WOTC could see traffiuc was using cards as coded messages, and decided to remove them entirely rather than dealing with potential controversy.
IMO this is stupid. I think the right thing to do about "bad" history is to keep it in the open, as an opportunity to explain why people thought it was good but think differently now. WOTC is in the business of selling cards, though. It's their call what to do with their property.