Since the year is only 3/4ths over, I think I will wait for the final count at year end to see exactly how many excess deaths actually occurred over the whole year since that is still subject to change and could go down. Then I will look at the population change, demographics by age, and overall death rate to see how out of proportion they might be. Then perhaps it can be addressed.
You are asking why a team has more losses than last year three quarters of the way through the season, while they are still only on pace for more losses than last year, without looking at total games played, strength of schedule, composition of the roster, and then saying it must be the coaches fault. It is too early to know. Occum can't shave a beard that hasn't grown yet.