The companion paper seems to indicate that the phototonic gammaization inhibited istropoic nucleazation. It was the nucleazation reaction that was needed to restrict the catalyzation to C14.
The trees don’t really realize the change and thus the presence in the very isolated rings.
Three D chess
I think more samples from a wider spatially distributed tree sampling is in order before thinking that the sky is falling and we're all going to die (maybe).