David Hershey schreef
Probably they tested it and found that it didn't break the record so
there was no reason to publish a followup. Even ring counting of trees
might underestimate the age of some trees.

+ + +
Well, to be exact, ring counting is of very limited use. A tree does not
have to make a ring every year, or on the other hand, does not have to
restrict itself to one ring per year. There is also the matter of pieces of
wood from a plant that has been dead for awhile.
PvR