I haven't played FFXVI or TOTK yet so my opinion probably doesn't count when it comes to these four, but even without playing those two the worst writing has to be between Starfield and GOW: Ragnarok. I loved GOW 2018, 2nd favorite SIE game of the PS4 gen behind Ghost of Tsushima. Ragnarok is no GOW 2018. Story does not keep me interested, and it's all over the place. It's more like a high school drama than a story about actual powerful gods. The other part is that the world feels more lifeless than any previous GOW, like the environments don't add anything to the story. I haven't finished the game, because I find myself not having enough interest to go back. The story has no pull for me, and the gameplay is good but not addictive at all, so I guess I'll finish it when I get around to it.
I love Bethesda games, loved Skyrim and Fallout 3, actually really enjoyed Fallout 4 even with the terrible response system. Starfield is a ton of fun for me despite it's story, but that's no excuse for the terrible writing. I legitimately hate two of the companion partners and their whiny characters (Sarah and Sam), and the backgound stories of all of them have gaping holes, are completely silly, or are completely unrealistic. I don't buy any of their stories, and would not be sad to see any of them die off. They are so unrealistic that there is no emotional connection at all. The main story has promise, and some of the questlines are good, but so many are just silly or ridiculous. There is also no edge to the game. Neon is a city with an addictive drug that everyone raves about, it's supposed to have a seedy underbelly due to this. But where are the drug addicts? Where is the seedy side? Everything is so sanitized and sterile. Interestingly the best part is the environmental storytelling. Some of the locations have stories built in that have to do with why they were abandoned, and some of these are incredibly well done. I just wish those types of stories persisted throughout the whole world.