I'm tired of people saying that someone with underlying conditions wasn't actually killed by COVID

[Ms. Toad]

8. You are correct that HIV caused the condition - and that is why the analogy fails.

For the analogy to hold, you would need to argue that diabetes was actually the cause of death when a person with diabetes dies of COVID, and that's the opposite of the point the OP was trying to make.

This is the logical:

Underlying disease: HIV - diabetes (for example)
secondary disease: Kaposi's sarcoma - COVID

For the analogy to hold - either both HIV and diabetes are the causes of death OR Kaposi's sarcoma and COVID are the causes of death.

The reality is that these are not analogous.

HIV kills indirectly (by creating an opportunity/environment for an ordinarily harmless opportunistic disease to infect and kill).

COVID kills directly (by any number of vectors that can overwhelm hearts, lungs, circulatory systems; it may be more deadly when those systems are already damaged by a primary disease)