If there was a restriction of a $1000 purchase limit in a 7 day period, it was not stated. I never read anything on their web site about it. I never used any name or address other than my own, but received the letter from them. So I did not exploit any loophole or do anything wrong. If Chase makes an offer on their web site, they should expect people to avail the offer. If the offer is a money loser for them, then they should not offer it.
As I said earlier I am almost 2K miles ahead, and do not have any bad feelings towards Chase, other than they are selectively targeting people and excluding them from an offer on their web site.