Do you like local dialect in your fiction?

I'm not a fan of deep vernacular in a book which makes the story hard to read. Thinking of Mark Twain and more recently, "Where the Crawdads Sing." Incidentally, both authors are doing just fine without my endorsement.

When I was young, I read all of Thomas Hardy's books/poetry with a dictionary at my side to look up words like "reddleman" or "blooth" but even with the handy Kindle doing the work for me, I don't want to work that hard to read. Reading should be pleasant. I get so bogged down in the vernacular that I lose interest in the story. What's something you avoid in fiction?