I guarantee you that syrup was still good when you threw it out. I came across some honey which was over 30 years old. It was still fine. High concentrations of sugars seem to keep longer than we expect. It is sad that a long honored brand name is suddenly racist. Aunt Jemima and uncle Ben are such suppressed people. Do not forget the Native American or Native Canadian who was on a butter brand. All racist emblems of suppression and exploitation.
You might be surprised. Several years ago, ethnic items became hot among black collectors, and prices soared. My personal doctor who was also a teacher at a Medical School became a big collector, along with several noted entertainers.
In our shelves we had a copy of the children's book from the 1950's called Little Black Sambo. I checked on eBay and found that it was in demand. The copy she had was an edition that was in demand and was selling for over $100.
Black based American such as cookie jars and kitchen utentils typlically bring excellent prices at auction.
A big determination of what is acceptable is set by the potential buyers.