Why feel sad about the weak? There is no sadness in global politics. If Hezbollah and Iran are getting picked off, is due to their incompetence, stupidity, and their corruption.
What people should feel sad about is just the non-involved civilians.
When you become a person of power, you get all sorts of privileges but you also get all sorts of responsibilities. That person doing a good job, is not something to celebrate, is simply something that is part of the job that is expected to happen every day as routine. Maybe something that should celebrated is if exceptionally good job happens
Similarly, if you are doing a bad job, you are eventually going to be punished. Either by "good" way of being stripped off your position of power, or, as he has now found out, by getting blown up by Israeli missiles.
Let's be clear, he is now dead because of his weakness and incompetence. He has allowed Mossad to infiltrate every single part of Hezbollah. He has taken high level strategic political and military decisions that have put Hezbollah at this position. He had always worked with his hands shacked by domestic political reasons in Lebanon which he hasn't worked to resolve. His deterrence and response policies to Israeli attacks have directly lead to this outcome
And this is all for Hezbollah, don't even get me started on that joke of a "3rd pole" Iran.