If you think about it, it can't be a way of phrasing LL.

Lifetime limits are about multiple card accounts (over time), ie, if you had this card before (with another account), you can't get a bonus on a new card (with a new account).

So any statement about only one "card account" (singular) thus cannot be about LL.

And another clue: this say one offer per card account. Mathematically, that would imply two offers per two card accounts, or three offers per three card accounts, which would be the exact opposite of LL. So how it can it be LL?