No, the problem is people trying to validate email addresses when they shouldn't. Similar to the credit card name example in TFA, you're trying to save a call to the MTA, when in reality, a user that doesn't want to be contacted will enter foo@foo.com, and you have to send it anyway.
You want to validate email addresses, because a surprising number of users is incapable of typing their email address correctly in one try. Validation saves a lot of rework.
