@paco sure. But in most cases there is already a status quo, which is what people tend to mean when they say "not that". As in the situation is not great, someone proposes something and the reply is no that seems bad, I'd rather keep what we have even if I think it is still not great.
Ofcourse it would be even better if they did offer a valuable suggestion, but we can't all have ideas for everything and sometimes it is valid to just say no I do not want that