This part of the tweet is wrong, lets make it clear first:
TCG Anadolu was specifically modified to host and operate F-35B (possibly more efficiently compared to the original design), however it is not the sole purpose of the ship,it is an LHD with extended Light Aircraft Carrier configuration. It has partial maintenance and re-arming - refueling capabilities for fixed wing aircrafts in addition to helicopters.
It can operate in
-LPD mode, focusing on delivering units with LCU/LCT and transport helicopters,
-LHD mode operating attack helicopters and MAVs,
-LAC mode operating STOVL aircraft and supporting other landing units,
-mixed configuration of the right prescription of the above,as needed according to the mission.
For STOVL amphibious operations the platform was specifically designed for F-35B (elevator capacity, width ,deck strength etc), and rather actually for STOVL in nearby dimensions (Harrier).
Anything less, is loss of the investment, but as i have stated before the ship has 40 years of operations and sooner or later STOVL aircrafts will be on TCG Anadolu, UAVs are temporary solutions to provide aerial support in amphibious operations.