I cringe every time I see it, but just because I don't like it doesn't mean it should be wrong. It is super wide spread to use it that way (even more wide spread than the "correct" way), so it should be considered legal imho. Sidenote: I also hate that the plural of "house" isn't "hice" in eglish, but what can I do.
Rice isn't the plural of rouse, either. Dice is valid as singular and plural, no relation to douse. English is a language of exceptions rather than rules.
I know. My feelings aren't based on any rules. It's more of a gut feeling. "Houses" jus feels kimd of clumsy to me. The plural of "mouse" isn't "mouses" either. It just sounds weird to me.