I don't think action is needed, either. And certainly not the merging of differing taxon concepts. We simply have to wait for othr wikis to catch up with/change to the accepted species and frequently the various authorities are NOT yet in agrrement about which is the "accepted" taxon concept. Hence both concepts must be kept in wikidata. MargaretRDonald (talk) 11:46, 15 March 2020 (UTC)
As has been discussed repeatedly, Wikidata taxon (Q16521) items do not refer to taxa, but to taxon names and via them to taxon concepts. It is perfectly legitimate for there to be different views on the "correct" taxon concept. There may or may not be convergence. I believe this is now "resolved" as "no action required". Peter coxhead (talk) 09:19, 19 March 2020 (UTC)