A serious problem with not quantifying predictions on the temporal axis is that many types of prediction then become unrefutable.

E.g. if you prophesy that we will be able to upload the human mind into a digital substrate, but don't say when, then if 2060 rolls around with no uploads in sight, you can say that the prediction is still correct - it just hasn't happened yet.

Unrefutable predictions have about the same status as unfalsifiable science.