If we write something as follow:
I think I should mention that this isn't a good idea.
Links take you to pages, that's what users understand them to do. To break the users assumptions and cause a link to POST, to do an irrevocable thing, is generally considered a bad idea.
Use a button, label it semantically, then your user knows that clicking this does something.
I really need to emphasise that this isn't a good idea at all.
This breaks the internet.