I think the issue with it is that it is such a rare occurrence that it just feels like incredibly bad luck when it happens. If it happened semi-regularly then it would feel like something that you would need to prepare for, as in always have an escort with your dropships when moving to landing zones and terror sites, but since it probably happens less than 1% of the time going through the trouble of arranging an escort and ensuring that you have a proper base setup to keep your interceptors in range just feels like a waste of time and resources.