What I take from all this is the fact that the Babylonian confusion regarding names is now continuing on the various languages level. I still recall an encounter we had in Thailand some years ago with a German birder. He told us about a bird he had seen, but he only knew the German name that none of us, also German speaking birders, knew. We strictly adhered to the English names that were the only ones for which there was a FG (aside from scientific names, of course that were in that book as well).
And the fact that there is now a movement to change an established list of German names in HBW, is exactly what should be maintained, for those who want a German name. It is not helping the cause by starting to change those names. Soon, nobody will be certain which name to use. I can't conclude anything else than that there are some underemployed systematicists, to put it politely.