It's hard to figure out how to explain it but I'll try. I agree that it feels very appropriate considering everything Obi-wan has been going through. No argument there. It took me out of the show because the rest of the show has this big adventure vibe to it. Leia is this fish out of water who wants more from life. Obi-wan is dragged back into a conflict he just wanted to leave behind. The bad guys are over the top villains. Kumail Nanjiani is doing Kumail Nanjiani things. All good fun. Even the other bad stuff we saw, like the strung up jedi, felt in keeping with that call to adventure vibe.
But the scene with the trooper hits differently for me. It was like a slice of real life got thrown into my fun story about space wizards. This man who lived past their usefulness to an uncaring machine has to beg to survive. The look on Obi-wan's face knowing that he bares some responsibility for putting him there. Just a gut punch now that he's opening up to helping others again. Like saying, "You want to start caring again, Obi-wan? What about me?" Just a bit too real.