I personally wouldn’t say “gameplay is the most important feature”, but it’s intertwined.

A game is a piece of art, and a piece of art passes a message or a sentiment to the end user.

Some don’t need gameplay at all, like the novel-like games with eventual quick time events like Until Dawn, just nice graphics and an appealing story are enough to pass on what the creator wants.

Other games require heavy focus on gameplay, remembering enemiew behaviors and learning a plethora of items and skills so the player can even experience thee world around him, a good example would the Souls series.

There’s even games in between, like Cyberpunk, where the graphics and storytelling are the most important aspect, and the gameplay is there but is not important enough to pass on the message. And vice versa.

The worst a game can be is “meh”, or leave you uninterested on any of its aspects. Haven’t played this SW game, but if I compare to the the SW works, the focus should be either good action (like Jedi Academy game) or a deep and interesting story and world building (like the Andor series). If the only thing It has is graphics, then I can see how uninteresting it can be.