But interwiki redirects are not broken redirects. The software has no (easy) way of checking - or if it does, it's not used - whether the page on the target wiki exists or not, so it just assumes that it's a broken redirect. This is probably why people use silly "soft redirect" templates.
Soft redirects are - at least in my opinion - pointless. Interwiki redirects are not broken redirects. If you, as an editor, cannot tell the difference between a redirect to a nonexistent page and a redirect to another wiki, then the only one who is broken is you. Not the software and most certainly not the redirect.
So why do I even care? Because:
- soft redirects are pointless
- I used to use interwiki redirects *a lot* during my time at Wikia and I absolutely hate getting notifications about new messages on some random wiki I haven't edited more than once
Seriously, just because you don't understand it doesn't mean that it's broken.