They know that it can be seized. Those NSTs are owned by a a legal person, a company. Legal persons only exist within law, defying a court is not something they can do.
An actual person can refuse to cooperate.
(The next question is of course what happens if some actual person who has the necessary password refuses to cooperate. Which kind of crime is that? Theft, or perhaps embezzlement? That person has something that the company owns and refuses to hand it over.)
So, are Nike's logo or designs actually stored on the etherium blockchain? My understanding is that most NFTs just embed a URL. If that is the case, the retailer could simply change the content hosted at the URL. The NFTs would be unchanged and the coupons could still be redeemed. Everybody wins.
What’s the lawyers real angle? Placating out of touch bosses? Billing hundreds of easy, useless hours? Trying to get some legal precedent in place?