The Wall Street Journal's puzzles are edited by Mike Shenk. For years - going back to when he was in college - he published puzzles under the name "Marie Kelly" (an anagram of "REALLY MIKE"). Then, one day, the people at crosswordfiend.com decided that was unacceptable - that potential female crossword designers would be put off by the fact that a man was publishing crosswords under a woman's name. And, obviously, we need more female crossword designers. As well as more female answers to crossword clues. And don't even think about publishing a crossword that has, say, FASCIST as an answer - they don't want to see such an awful word.
I wish I was joking.
Otherwise, yes, it should rarely be an issue.
None of them look great, intuitively. Actually it is kind of interesting, although unsurprising on second thought, that the removed words skew toward these harsh g and k noises which don't show up as much elsewhere in English. So they don't look like good first picks. But maybe at some point strategies will advance to having common second picks or something like that.
People can easily make a whole game panel of these word guesses, then post a screen shot on social media. Then cancel culture mob takes over.
* some words with negative connotations from the solution set
* slurs from the allowed guess set
As such, I believe there already weren't any slurs in the possible solution set. Or at least they weren't in the group of words which were mentioned as removed here. So, your scenario was already not possible.
I think removing the words with negative connotations from the solution set was a great move because, while they aren't slurs, there's no need to give people that negative experience.