I keep telling my wife to apply for her filipina passport and have duel.
When we were stuck in the philippines in 2019 due to covid lockdown it was very handy. She had the duel then.
Fly using her UK passport and show both at passport control and we both get the 1 year balikbayan stamp. Saying that just flashing the old expired filipino passport is still good enough for a 1 year stamp.
I just think having both is always a good option.