Oh, let's not mess about: if any of the people you listed had hurt anyone the SI cared about he'd have shoved them into the deepest darkest hole he could find and thrown away the key. He's an Orange Lantern.
This is worth bringing attention to:
no one, especially a Orange Lantern, treats everyone equally. They
always place more importance on things that involve them personally.
It doesn't matter if you're a Orange Lantern, or Superman the Living Embodiment of Justice, if you're even remotely
human in mindset you do not treat all people and all situations equally. You place more importance on your friends and family, empathize with them more, you're more willing to go out of your way to help them, etc.
Think of it this way, if the Joker or whoever killed Lois Lane vs some random person, which do you think Superman would be more pissed about? I mean objectively speaking, they're both
people, they both have families and friends, they both feel the same sorts of things, so shouldn't he weigh them equally?
But the Joker has killed dozens of people in pretty much all of his incarnations and Superman hasn't made him a
particular priority, but you can bet if he killed Lois that Superman would make sure that madman rotted in jail,
or worse.
Most people don't
like to admit this, or don't even
realize it if they aren't particularly introspective. But Paul is a
enlightened Orange Lantern. A
regular Orange Lantern worth his salt would know and understand this, let alone a enlightened one. Paul probably would have hesitated a bit more if it was someone he didn't know, but Nabu hurt one of his closest friends and took her father hostage; I'm honestly surprised he wasn't even
less patient than he was. I'd bet that if it wasn't for the fact that he was literally
on the head of his hostage 24/7 the whole thing would've been resolved a lot sooner, with a lot more violence.
I'm also surprised that it hasn't come up more in the discussion with the League. Maybe because it's not the
core reason for how he acted he is wisely leaving it out to save a little face?