It's the difference between spending a lot of time at the slot machine vs becoming good at chess. It's s massive difference. You don't "grind" chess, you learn from your failures and get better at it. Sure, you can get lucky sometimes if your opponent blunders but the strategy to wait for that to happen is a failing one.
The analogy with Chess does not work: I can go on YouTube to watch how a pro player beats a specific boss, then use that to massively shorten how long I need to beat that boss.
Watching a lot of grandmasters play Chess will minimally help me beat a Chess AI that was better than me (excluding the beginner level).
I think that someone could have fun playing a Diablo-like RPG because they enjoy feeling powerful while they mow down a lot of enemies. And someone someone could enjoy a Soulslike game for the precision they need to apply to beat a boss.
Maybe it is somewhat similar to the difference between an arcade/fun racing game and a professional track racing game.
I wouldn't consider one to be "better" than the other. They simply have different objectives.
