Well not really quick firing - because the person is performing his tasks - just not going over and above .. So I would say it would lead to resignations, Well a Good Manager can identify the change in behaviour of a team member because quite quitting or silent quitting starts from as small as not attending meeting on time or skipping them completely and when such a behaviour is showcased for long time & there are signals like these which quite quitters give unknowingly leaders should be smart enough to catch them in time..