Wordle is a pretty good example of how much success you can have with an unremarkable and unmemorable domain name.
A better example of a bad name might be Ycombinator. It's not immediately obvious what it means, and if you say it aloud it sounds like a question. Doesn't seem to matter much if you're successful enough though.
Now it's https://www.nytimes.com/games/wordle/index.html
It's never been wordle.com (or even at any TLD), and despite that:
> Over 300,000 people played Wordle on January 2, 2022, up from 90 players on November 1, 2021, a figure that rose to over 2 million a week later. [1]