I don't agree with Jim all the time but do a lot of the time. It's ok if you don't agree with Jim or whatever, but his video is him saying he doesn't like it and why he feels the way he does. He isn't wrong for not liking it or his reasons for not liking it.
I also don't really like Sekiro. Honestly, I got to the Corrupted Monk fight at the end of the shitty village and basically quit (in that at that point I just wanted to finish and used a cheat engine table to get to the end of the game, or at least get to an ending) Some fights I didn't need it on, clearing some areas I forgot it was on (set to not being able to die, living with 1hp) but managed to play through well enough keeping my HP in check and resting like normaly without my hp emptying out, other fights I'd try to just use it as a tool to get parrying timings done before trying for real but again, just wasn't enjoying it.
There were fights that were really good, like the Genichiro fight and some of the sub bosses but then there were enemies and bosses where it felt like you had to play exactly how they wanted to and you had to play it well and there never seemed like much of a ramp up with difficulty. Most of the time I ended up cheesing some of the harder fights or finding the easiest and cheapest way to win because I wasn't having fun. I wasn't getting better, and wasn't getting the timing down to parry the attacks and dying before I got into the rhythm.
And I know, the answer is "git gud", it always is with these hard games, but it really feels like before it was kind of a joke but not really (in that there were a lot of ways of getting good, like levelling up more, trying different weapons, going through the level slower so as not to get caught by surprise etc) here the getting good is really just "get better reactions".
Even when told "you don't have to perfect parry everything" you also get told to parry everything, because if you just block these big long multi hit combos your posture is just getting eaten. Really just not something I enjoyed. And I know, I'm a filthy casual who has only beaten DS1-3, DeS and BB (and some other "soulslikes") and obviously I'm not worthy of playing this masterpeice because I'm playing it wrong while also being bad at games and all that.
