Does Ontraport allow a spam by-pass?

I just tried to unsubscribe from an email list.  It was sent to my personal (non-work) account and I don’t remember subscribing – not to say I didn’t o it sometime.

But click the unsubscribe link and something went a bit wacky.

Take a look at this – no data in my subscribe forms, plus it thinks I subscribed at a date before email was invented!

Ontraport unsubscribe form #fail

So I’m asking for your help

Is this a spammers work-around?  Use someone’s email but fail to allow them to unsubscribe?  Is it a genuine Ontraport web page?

The URL string seems to have genuine  subscriber data but it implies I clicked “abuse” but actually I clicked “Unsubscribe”.

http://REMOVEURL.ontraport.com/u/MjU4MDYvMC80MDc3OS8wLzI4OC8wL2Y5ODc5Y2M5MmViOTRhNmQ2ODhkZjQ4YjdmMzViOTcxLzQwMDY5Ng==?aid=25806&item_id=288&email=&action=abuse&cid=40779&aaid=2&drip_id=0&stn=0