The problem comes when enough uncorrected misunderstandings causes words to mean both X and not X. After the figurative slippery slope, we would end up with all

The problem comes when enough uncorrected misunderstandings causes words to mean both X and not X. After the figurative slippery slope, we would end up with all words meaning one thing: something (depending on context, who's talking, and who's listening). I don't think we're making future generations any service by diluting language. As they say: be conservative in what you do, be liberal in what you accept from others. Here, I'd extend that to: conservative in what you do, liberal in what you accept, but providing feedback on what you barely accept.