The rationale is fair enough, to some extent: it implements something you could already do a bunch of other ways (JS events, proxy through a tracking redirect, ...), so it's not giving anyone novel capabilities. But in return, it avoids (in theory) tracking enthusiasts playing stupid sneaky games with hypermedia, and encodes the intent of the site author semantically into the page, where the browser can understand it (and then ignore it, or point it out to you, or ...).
TIL I guess.
@danderson For contrast, Gemini has a protocol level limitation of one click equaling exactly one network transaction.