Ask HN: How is this USPS 'incomplete address' scam supposed work?

I and others have received text messages like this:

> Your package has arrived but cannot be delivered due to incomplete information. Please confirm your address in this link. us415069620.4u6hip7s.co

That link is the latest one I've seen. It's behind cloudflare and it redirects to the actual usps.com home page, so did they set their scam up wrong, or am I missing something?

I've seen other ones where there is actually a fake USPS form to submit a corrected address and enter credit card info.