4) Age Factor:-
Though Parthiv Patel has made comeback after 8 years, he is not that old as he debuted very early. He is 31 years old, a year younger than Wriddhiman Saha who is 32.
Hence he still has 4-5 years before eventually retiring.
With Players like Rishabh Pant and Sanju Samson still very young, they lack experience. Hence he can play as a specialist keeper until these young guns make their debut.