I was recently reminded of this phrase that you see (and hear) frequently in obituaries of one type or another:
"A brief illness."
More and more, I feel that this is the 'go-to' phrase when someone dies of Covid-19 but whomever is in charge of the obituary or news story does not want to report that detail (for one motivated reason or another).
I am old enough to remember when AIDS was dominant in the news and people (both ordinary and prominent) were dying from it quite frequently. For the record, AIDS is still a menace to our society and, despite advances in medicine, is still causing great calamity wherever it strikes.
When someone died of AIDS but their family did not want to advertise that fact (because, especially in the beginning of that pandemic, it was also a de facto admission of the person being homosexual), they would say that the person died because of "heart failure" or "a heart condition." And the snarky response was always, "Well, yes - When your heart stops beating, you die. But HOW did the heart stop beating?" One famous example that comes to mind was the entertainer Liberace.
Granted in both cases (heart condition & brief illness), there are always several legitimate reasons to use both phrases that don't amount to any nefarious purposes. However, "a brief illness" is right up there with "heart failure / a heart condition" and "exhaustion" (I remember when "Lyme disease" was briefly popular in the entertainment industry as an euphemism for recovering from drug and/or alcohol addiction, as in "they're recovering from a bout of Lyme disease.")
I have no doubt that, as the years go by, loose tongues will eventually reveal (especially for the prominent personalities) how many of these "brief illnesses" were connected to Covid-19.