There's a lot of users that keep a eye on "high" level profiles on this forum. When I returned to the forum from a period of activity I had several users contact me to provide a signed message from addresses that I had previously posted on the forum. Dating all the way back to 2015.

As for the estimation of the deaths, that would be assuming that the spread of age on the forum is the same as the statistics in other countries. The statistics are chance of death will widely vary due to the fact that Bitcoin, the internet, and cryptocurrencies in general apply to a certain individual, and I would estimate that the younger generation is far more likely to be interested than those that are in their seventies plus. That also brings up the fact that there's likely a lot of programmers, and other users which can work from home, and significantly reduce the chance of getting infected. Unfortunately, due to the varying circumstances you cannot apply the same statistics of the current virus to the forum users.

I would estimate that the majority of accounts that can be hacked, have already been hacked due to the database compromises in 2015. Most active users would have likely changed their credentials or their credentials were already good enough to withstand the attacks that a malicious user could've performed on the hashed data.