For many engineers who don't "get" art, I'll try to give an explanation that parallels something many programmers will be familiar with.
Of course, there is a lot of pretentiousness in the art world, but often when you see a painting or artist who is revered in some way, and you wonder "Wut? This is incredibly simple and boring." it's often because the artist was the first person to really look at the world in that way. Probably my favorite example of that is Agnes Martin, https://en.m.wikipedia.org/wiki/Agnes_Martin. I look at her work and think "She's famous for drawing graph paper??" but I think the Wikipedia article does a good job explaining how her work was such a departure from what came before. Similarly, Heizer is famous for the scale and site-specific nature of his works, where sculpture and landscape blend.
This may not be a perfect analogy, but PagerDuty has a market cap of about 2.25 billion dollars (and it was recently twice that). I've used PagerDuty extensively, and I've thought "The is basically a calendar system with alerting policies. How can this be worth so much money?" But the fact is that PagerDuty was one of the first applications of its type that solved an important (if mundane) business problem it a straightforward way. It may not be "genius" in the way Einstein is genius, but it was one of the first to address this problem it a way that users really liked.
I think Wordle is similar - it's not some genius accomplishment, but it does so many things in just the right way (the once-a-day nature, the way sharing works, the jiggling of the letters, the fact that most games just take a couple minutes but every now and then one will leave me stumped for a long time, etc.) is why it became a phenomenon when there have been "word jumble" games for ages.
So my point is that if you see some piece of art that you don't "get", at least first try to understand the context and history of what went into making a piece. Even if you still don't get it after that, it can leave you with some appreciation of why that particular work is more renowned than others.