The article directly addresses this concern:
"If you’ve flown Spirit and worry that Google will soon know about a testy conversation you had with the airline’s call center, you’re being told not to worry. The court filing says the data was deidentified before being put on sale and Google has promised to scrub any PII it finds in the trove."
See the last 3 sentences of GP's post
I have a bridge to sell you.
unfortunately "de-identified" data is typically re-identified quite trivially. so i guess we just hope google keeps its promise, and is competent in its scrubbing.