Mac showing Thunderbolt Ethernet as Airport
Are you sure someone isn't playing a joke on you?

Just rename the service. Click the ⚙ icon...



Then rename the server. You can call "Thunderbolt Ethernet" something like "Wi-Fi", "Yo Mama" or anything you wish. You'll also want to change the name of the inactive "Wi-Fi" entry to "Thunderbolt Ethernet". Your software seems to have switched the interface names.