>>>You can drive on snow if you are careful. IMO anyone who thinks they can drive on ice is delusional.
>>
>>Wouldn't that be "...are delusional"? I mean, that "anyone" was already promoted into "they", and deserves full plural with the honor.
>>
>>Oooops... make that "and they deserve full plurals with the honors".
>
>I thought "anyone" is singular there but could be wrong.

Anyone is, but anyone became they just three words later. Forget the past, we're a they now, not just anyone. Why go back to singular anyone when they have already achieved plurality?