I'm 100% down for this. I read very little to avoid spoilers, or even avoid too much non-spoiler foreknowledge, but it sounds really interesting. I love "boredom" in games - long quiet periods, simple goals with complicated solutions, stuff like that. Plus I also love sort of weird feeling character controls, like Red Dead Redemption 2, where it's possible to slip and fall down a hill. Sounds like a game I'm going to love.
I take forever to finish open world games because I like to just stroll around. I don't think I've ever played a walking simulator I didn't like (though I was weirdly a lot cooler on Journey than most).
I have no idea from those reviews if I'll like this though. MGS 3 & 4 finally got me over the hump on Kojima philosophizing, there was enough good in there with the silliness and hit-you-over-the-head obviousness to make it worth my while. When I read that review complaining about the game making them sit with themselves for 3 minutes, that just sounds like an immature person to me.
On the other hand, I just flat out quit on MGS V after around 20 hours or so. It felt like something that was trying to set me up to spend 100 hours with it and its massive list of tasks, and it just felt onerous. The general gameplay loop just wasn't doing it for me. On the plus side the controls in that game and (especially) Peace Walker were a huge leap ahead of his other games. Older MGS & ZoE games felt like you were operating a crane or something instead of a capable avatar. So I don't know where DS will sit on that curve if people are complaining about it.
This seems like something I have to try for myself.
