So both sides are in a face off
If Israel invades then Hezbollah ups the ante,
If Israel hits Lebanese infrastructure then Hezbollah hits Israeli infrastructure
Both sides thus far are to some extent not trying to target civilians openly like Israel did in Gaza
Now Hezbollah may take pain, but this in its own won't destroy it and Israel gets stuck with constant resistance groups being built around it
At the same time trying to stop multiple nations and organizations demanding a free Palestinian state
Even the GCC Arabs and Egypt and Jordan in the aftermath will say, ok now let's create a Palestinian state AS PER INTERNATIONAL LAW and U.N resolutions
In the long term it's demographics destroying Israel and not anything else
Israel is doing what it is doing, be it 300 airstrikes in the last hour, message to civilians to leave, pagers blown, attack in Beirut to take out Hezbollah commanders which killed 50 civilians as well. They have shown they will not back down, the ball is in Hezbollah's court and I don't think they would want to up the ante or climb the escalation ladder and force Israel to bomb Beirut.
Also GCC, OIC, small countries, protest in Universities etc, Israel has shown they don't care a damn about them, it's only US and maybe EU who can rein-in them but either they have a go-ahead from them or maybe they control US deep state somehow.