IT people sometimes refer to such schemes as 'survey scams', though they are not criminal scams, they are misleading promotions.
They are generally run by legitimate businesses (legitimate as in legal - they file tax returns) and usually hold out the promise of a reward for participating in various marketing surveys, some of which can require purchases.
Here's the disclaimer from the web page indicated by the OP:
Note that this is far from a free offer and if you read the above carefully you will find that the disclaimers "a reward at potentially no monetary product costs to you", and "Some reward offers require a purchase."
I consider this to be a scam because it says "free" on the front and then says "maybe not free" in the terms. But this is business, not crime, it's like that FREE OFFER (with every $1,000 purchase).
The good news is that information gathered will not be used for purposes more nefarious than marketing!