Without passing judgment on either of the frames, and wishing not to disrespect anyone's opinion, I am nonetheless curious.
It is understandable that a museum would want original frames, or at least period-specific frames for the artworks they display. It seems perfectly appropriate to recreate the original frame for Washington Crossing The Delaware. It was integral to the art.
But that's not what's going on with Thayer's Still Life, is it? Did Thayer select or create a specific frame design for that painting? In 1886, were there no frames similar to the earlier one? If the artist had selected that frame, would it have caused the art to be less appreciated?
If that same image were painted in 1786 or 1986 instead of 1886, would the "appropriate" frame choice be the same?
Before there were picture framers, artists had to create their own frames, and they were integral to the art. Later, artists commissioned specialists to create frames to their specifications. Eventually, artists selected frame styles created by frame builders. Today's artists seem to believe that the most appropriate frame would be the cheapest one that fits, acquired from the neighborhood garage sale.
Considering that judgments of style and appearance are mostly personal, how are some people qualified to declare with absolute certainty that one choice is right and another is wrong?