[Ditto]

It is time for science to stop putting out unproven theories.

<<<<< Scratching head. >>>>>>>

By definition, theories are unproven.

[ApplegateRanch]

Let's try refining the expostulation:

It is time for some scientists* to stop putting forward unprovable conjectures disguised as hypotheses.

Better?

*The same some scientists the press is fond of quoting, but never identifying.