I specifically wrote "/conditions" to predict that specific rebuttal.

The virus could be the same, the opportunistic additional virus/bacteria could be different.

just like HIV causes no symptoms, until your immune system is down and a different infection (caused by bacteria or virus) kills you. Maybe even a normal "gut" bacteria, or something in your body usually present, is what kills you.

There is research pointing to Sars-Cov-2 attacking T cells directly. Instant AIDS.

In the fall and early winter, there could have been different variables that made it less debilitating and deadly than the spring variables. And in that case the fall and early winter deaths and pneumonia would have blended in to normal distribution.