As someone who's played it all the way to the end while doing nearly all the sidequests and beating every superboss, I can definitely get behind the sentiment that the gameplay feels dated. The mechanical appeal is being able to customize your party however you want and have them do crazy things (like making a glass tank to evade all physical damage), but sometimes getting there takes so long that it's extremely offputting. Thankfully, the quest system has been streamlined so that the majority of quests can be done far quicker but even that isn't enough for everyone.Xenoblade Chronicles Definitive Edition: I'm not going to rate this with a numbered score, but I'll just say that it wasn't for me. I didn't enjoy the parts of the game I played. I really disliked the combat and the overall gameplay was just boring for me. The open world wasn't nearly compelling enough to keep me going. I had no desire to continue, but at least someone will be able to enjoy it when I sell it on eBay. Different games for different tastes and preferences, I guess.
While the gameplay takes a backseat, the characters and general plotline are the real driving force behind the game--the party sets off on a revenge mission after their hometown gets attacked, then some stuff happens and it turns out that everything isn't as it seems, etc. A bunch of plot twists occur with strong character building in between, and the whole thing gets flipped around on its head near the end. So narratively speaking, the story is extremely grounded and compelling with a determined cast that should be experienced one way or another. I'd recommend watching a few cutscenes since the game isn't your thing.
...That being said, avoid Xenoblade Chronicles 2 like the plague. Unlike XCDE, it's way too anime-tropey and the gameplay was dumbed down even more. Conversely, if Xenoblade X ever gets ported to Switch then you should definitely play that one--it has a dedicated run button!