Yes, but usually this happens slowly enough that the chip will be long obsolete before the degredation becomes an issue.

Why do chis degrade? Is this due to the whiskers I’ve heard about?

> Why do chis degrade? Is this due to the whiskers I’ve heard about?

No, tin whiskers are a separate issue, which happens mostly outside the chips. The keyword you're looking for is electromigration (https://en.wikipedia.org/wiki/Electromigration).