Wordle is a great name - it's short, only two syllables and relates directly to the product.
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.
Wordle is a great name. But strictly speaking, at no point there was `wordle.com` or anything similar. Wordle always lived as a humble page on a larger domain. Which I believe was the point of the original comment: That if your product (name) is good, domain is secondary. The vast majority of users can just google at this point (which might not have been true 20 years ago).