That's the game. Softball treatment of interview subjects assures access, while expert probing can cut-off access for journalists and even all their employer's journalists.
Of course this favoritism is less possible once you're elected and in the White House Press Room, but everyone's playing their A-game there.
I remember the shock when in 1977 Barbara Walters with a great show of feigned compassion and apology asked the Shah of Iran and his wife about his regime's torture of Iranian citizens. Mohammmed Reza Pahlavi's third wife Princess Farah Diba started crying on camera and the Shah walked out. You don't see that sort of thing too often.
She earlier asked the shah whether he believed his wife, whom he had made Regent to take over in case he died, could govern as well as a man. He declined to answer and when she pushed and pushed, he finally said no he did not believe women have the same intelligence or ability as men. Walters then asked his wife Farah Diba what she thought of his answer. She said to her husband, "I don't think you really believe that," adding, "But what have men done to the world, really?"
Of course that was her parting shot with no further access to the Shah who lasted only another two years.