Do you consider yourself as being "detained" every time you walk through a revolving door?
Revolving doors go round and round and don't usually prevent egress.
It can't even be compared to a turnstile because they don't seal you in like this appears to do.
Understanding that this will get me downvotes, the concern is, quite frankly, stupid. Before you ever get to this door, you've gone through airport security at some other airport. You've already been "detained," identified, and searched. If they wanted to arrest you there, they could (and they do).
If they wanted to arrest you when you landed, well, they have the trip manifest for every flight. You can't fly anonymously. If they wanted, they would have a police officer waiting at the gate to arrest you. And they do this.
Now, when you're leaving the airport, and they already know who you are, and they have already searched your bags, and they have already had numerous chances to arrest you at both the source, destination, and connecting airports, suddenly, a one way door that temporarily encloses you (like a revolving door, or an elevator, or the multiple sets of automatic doors leading into a supermarket) is "detainment" and "ripe for abuse" and an "erosion of the constitution." What?
Please. This kind of nonsense is embarrassing.