Doubt the server will die for a while, always going to be some sort numbers, but I reckon a lot of long timers are getting pretty sick of the server with all of them probably having different reasons
A tricky subject for sure. Arma has for a while now been an ageing game and newer and better games are being released daily. The community has a strong foundation that long years of work and dedication from both players and staff have created. As for the server itself, I think there is a potential that we will slowly make a move to a new game (Arma 4 is taking a while) that will give more roleplay potential. I don't think that will happen in the next six months but I see that as a likely future.
You can see arma dying down, but I don't see fivem being the saviour either, people are already dedicated to a server that's been up and running for a while and the lack of skill on the shooting end won't appeal to everyone either