I think the point was the hundreds of mourners at the funeral, not that the dead guy was 90, but maybe I missed something.
Perhaps you missed (or not) that he died "from" Covid, though I would say "with" Covid. At that age, a seasonal flu or some other infection would have finished him just as well.
You are correct, however, that the point is in the thousands, if not tens of thousands people passing by the coffin, many of which were kissing it, and then going through the religious ritual of eucharist (I think that is the right translation), where the same spoon is used for everyone.
The irony is that he apparently contracted the virus twenty days earlier in Montenegro, attending a funeral of another church dignitary, who also died from complications related to an earlier Covid infection. Open-casket, no-masks, no social-distancing funeral in Montenegro.
Having said that, I went to a funeral in March, literally 2-3 days before getting sick with Covid. That was a private, yet huge funeral, the chapel filled with perhaps 500 people. The family was greeting every one of the attendees, often kissing each other (three times)... we were standing for about an hour shoulder to shoulder, crying at times, and blowing our noses. No one in my vicinity got sick. Some family members experienced mild to moderate cold symptoms afterwards. The point being, it is not that easy to get infected, even in the so-called super-spreader events. More like the luck of the draw.
In the same 2-3 day before getting seriously sick with Covid, I had a 2-hour lunch with my 90-year old friend, and she drove me after lunch to my place (i.e., closed, non-ventilated car space). And I had a 1-2 hour breakfast with my 68-year old friend in my studio apartment (again, rather small, non-ventilated closed space. None of the two got sick.