Restating this (because I think I confused myself):
Ending a sentence in a preposition is not automatically wrong or right.
It is the type of sentence in which people shift words around just to avoid the ending preposition I was talking about. ("with whom", etc.)
You're talking about a sentence that is simply unclear because vital information is omitted.
Nothing matters but knowing nothing matters. ~ Wicked
Everything in life is only for now. ~ Avenue Q
There is no future, there is no past. I live this moment as my last. ~ Rent
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