Audiobooks are heavily dependent on the reader. In one case, I had an audiobook where the translator was the reader. She is an excellent translator but a poor reader.
Many authors are poor readers of their own work.
They are certainly good while you are on a long drive etc, because they entertain you while doing some another task which you wouldn't be able to do while reading. During lockdown, I could not read due to the constant stress and fear mongering, but I had to walk a lot every day and the audiobooks were a good way to accompany that.
+1
The best audiobook I’ve ever listened to is Stephen Kings On Writing: A memoir of the Craft, read by the author. One of our times best storytellers, both when it comes to writing them and telling them.
When I write a character, I picture not just the character but the voice, same with reading, and going from a paper or eBook to an audio book usually breaks both. Books I write rarely include characters from Manchester (UK), so reading voices with my strong accent would definitely break a lot of my books. It is also the reason I sometimes don't enjoy movies if I have read the book. It is not a one way street though, some really good narrators can improve the experience a lot, same with good directors.