[Update 2: Wi-Fi Easy Connect in Android Q]
WPS disappeared in Android P and may never come back
https://www.xda-developers.com/wps-disappeared-android-p/

Android Q's Wi-Fi Easy Connect is a more secure replacement
for WPS authentication
https://www.androidpolice.com/2019/06/10/android-qs-wi-fi-easy-connect-is-a-more-secure-replacement-for-wps-authentication/