Half as Interesting explained how it ended up like this. https://piped.video/watch?v=_Bq-6GeRhys
TL;DW; Amazon tried to offload vetting of the third party vendors to the patent and trademark office by requiring their brands are registered, but the vendors ended up generating nonsense brand names that automatically pass because there are too many applications and the names aren't obviously going to conflict with existing ones.
The Settlers games have not been Settlers games after the fourth one. Except of course the remake, but that also was a very long time ago.