Earlier quoted context omitted.
Imagine you rented a car from Hertz on a work trip with a company card, and then Ford called your house.
Actually, if that happened, most people would be slightly annoyed, but not at the "wtf" level of this Tweet. Simply because it's a digital purchase, and it's "ye olde evil Microsoft", it's considered a "wtf" moment.
If their message went: "We saw you drove to XYZ using our model Y", addressed to a private contact line of yours, then that would also lead to quite a few "wtf?" along the lines of "What data is Hertz sharing with Ford?"