Words are magic spells to them. Back when I was naive enough to try to have a dialogue with feminists it was their Humptydumptyism that turned me off the whole enterprise. Take a word or a concept and they would change its meaning mid conversation without acknowledging they've done so and gaslight you about it. It makes it impossible to have an honest conversation which is the whole point for them.

“When I use a word,” Humpty Dumpty said in rather a scornful tone, “it means just what I choose it to mean—neither more nor less.”