
THAT'S WHY ROMM DOESN'T LIKE HOW SATO-SAN' WORK! HE'S ERASED EVERY GHOST EVEN IF THE GHOST IS 'KIND GHOST' LIKE MIKO'S FATHER PLEASE SATO-SAN YOU CAN ERASE THE OLDMAN GHOST, NOT THE FATHER AND HIS HORSE

Yeah but it makes sense thinking about it.
Romm sees and hears the ghosts he can empathize with them to some extent, letting them roam longer is a thing but they might lose their minds and turn bad.
Romm let's "OK" ghosts roam in our plane longer as long as they aren't dangerous yet
Sato can't diagnose or empathize with the ghosts, so he remove them because he can't just play hide and seek with them if they turn bad later.
I believe Sato can be "bargained with", if Miko promises to keep her dad and his pet ghost in check

1. His tsundere (that cold and harsh talk)
2. Accepting his karma (been like rejecting mc now he lovesick and NOT everyone will believe him love mc bc he is so harsh to mc from start even until now)
3. His obsessive self claiming fans youngest brother aka mc's friend. Bc i had feeling that he is gonna bothering mc.
4. His family's problem.
Big thanks to horsie that protect miko's father