Actually i think it is a reasonable question but presented because UFOis immediately taken to mea ET not what it just says unidentified flying objects.-there are now lots of those.
Just recently we have the Chinese Balloons, just the other day drones and the next one will be the LEO satellites falling to earth. So I think there is a resonablreasonable airliners encountering UFOS of this sort, 10 years ago no drones no high tech balloons and no LEOs. 2023 thousands of em, airliners plus the odd mil jet are no longer the only things sharing airspace nowadays.
I do agree it is wriiten in an odd way and does kind of suggest ' alien origins '