Breath of the Wild is not close to skyrim at all, I've completed Skyrim to 100% completion. Skyrim is also arguably a better game because it had far larger and elaborate quest chains that brought you to unique locations and landmarks around the world itself. It's not close to GTA since GTA's main appeal was also elaborate mission structure combined with a filled world, where as BOTW is very devoid and also lacks a variety of weapon types and vehicles. Ubisoft's games are the closest in mechanics and content to BOTW including the pointless collectibles.
What people mean by japanese games at this point is akin to K-pop. It has korean varnish in the but it's all western music much like how these games all have western gameplay mechanics. Arcades are dead, everyone's mostly playing gatcha on cellphones, so the major influences that drove direction in the past changed. So the types of games that the publishers are going towards on consoles are going to lean heavily into western inspiration.
Also this is an old graph of Monster Hunter's sales, it's only gotten bigger since then
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