When have business people as a very large collective ever been particularly outraged about the surveillance state? Nothing about the NSA's activities have been fundamentally rolled back. They won, across the board and across party lines. I'm not talking about seven executives from some corner of tech lodging a twitter protest, I mean the millions of people that make up the "businesspeople" category. They have never widely protested the surveillence moves of the last 17 years.
Americans will resist this as much as 24/7 cctv surveillence has been resisted in other developed nations such as Britain. Not at all. Most people do not view it as a threat to their liberty, they view it as an isolated intrusion that is to their security benefit.
EDIT: you edited your post after I posted. As long as you don’t make people uncomfortable on the plane, that is. Don’t take away their phones, laptops or headphones, and you can grab as many images as you want of their irises, retinas and fingerprints.
In many ways, Precheck feels like flying in the 90s. You know 24h in advance if you will be able to sail through security in < 5 minutes and can get to the airport much closer to departure.
[0]: https://universalenroll.dhs.gov/workflows?servicecode=11115V...
A small precedent was the widely flaunted "ban" on small electronic devices during takeoff/landing. A revolt among business travelers caused a rapid change in the rule.