okay, so I want to unpack this a bit.
I haven't read anything about burning down civilian buildings yet, so I cannot comment on that.
you say people are fine with bombing military targets, and my response is that I don't think this holds up to scrutiny. or, more nuanced, there's a lot of debate about what a military target is.
if Hezbollah launches a rocket from a civilian's home, the laws of war make it a legit target (it's a little more nuanced than that, but I'm going to assume this for the sake of this discussion). Israel has been bombing civilian infrastructure used for military purposes in the south, and gets shit on for that.
Fuad al-Shukr was indisputably a military target. Israel assassinated him, and received widespread condemnation, and accusations of escalation.
the pagers, were literally the property of Hezbollah, a recognized terrorist group. clearly a military target - they're used by the designated terrorist group to communicate. we've seen videos of them exploding, with minimal or no damage to folks not in the immediate vicinity of the pagers. I don't know how you can get more targeted than that. but again, widespread condemnation.
Hezbollah integrates itself with the civilian population. it's not like they have obvious bases in the south of Lebanon, they're just everywhere. they do that on purpose. so how can Israel respond or target them in a way that is acceptable? I ask this sincerely