This seems like an unnecessarily complicated promo for too little payoff - .8 miles/$. Will not change my behavior
Earn miles back on future award travel with United®. For every $12,500 you spend on your United ClubSM Infinite Card March 1 through August 31, 2024, you'll earn a 10,000-mile award flight credit on a future eligible award flight booked with your miles.* The sooner you start earning on your eligible card, the faster you can save on upcoming travel. There's no registration required. The 10,000-mile award flight credit will be deposited into your MileagePlus® account 3-4 weeks after you take a United- or United Express®-operated award flight booked with your miles. The award flight credit will be automatically applied to your first eligible award travel of 10,000 miles or more that is completed within 12 months from the issue date.