You’re wrong on this one, as the other comment noted.
Have I Been Pwned has a database of leaked credentials, with notes on where the data originated, when said site was hacked, etc. It is an incredibly good resource to see if any site you use has leaked your data in a breach, and how compromising that data is (legible or unsalted passwords, credit card information, etc.).
It is a tool used to react intelligently to data breaches. You input your email address, and it tells you if your email address is present in any leaked data sets. If so, you go change that password as fast as you can.
For your comment to make any sense, giving someone your email address means you’ve been “Pwned”. I guess you don’t subscribe to a lot of newsletters, then? How does entering your email address give anyone an advantage, apart from the knowledge that it exists? 🤔
The exact same feature is baked into Chrome’s password manager, 1password, and many others. Does that mean that users of those services have been “Pwned”? 😐