That sounds like a good idea, but I'm not sure how often it will work and how often it may backfire.
Clicking on the link may automatically disclose a code to the spammer, the code effectively confirming to the spammer that your email address is valid and received the spam.
I've never clicked on an unsubscribe link except where it was an email list that I had signed up for and decided to cancel at a later time.
With those reputable companies, clicking on the link sometimes automatically unsubscribes you and pulls up a web page saying "you have unsubscribed from the XYZ Corp weekly sales email" or similar message. You don't even enter your email address. If spammers sometimes use a similar system as is likely, trying the suggested strategy may backfire.