Not true. For example if the correct answer is TWEED and you guess TWEET, then you’ll get YYYYM.
Edit: As pointed out by two commenters, the actual implementation contradicts the following claim in the post:
> “Maybe” - the letter is in the answer but in a different position
If the correct answer is TWEED and you gess TWEET, you will still get YYYYN, because the actual implementation uses a different definition of “Maybe” than what is written in the post.