Because he is making enemies when there are other options available that getting a God or at least his/her minions angry with you.
Not to mention that he ignored Jade wishes and just resurrected people just because he could. When his excuse is that he was doing that for her.
He used to care about other people thoughts but now is his way or the highway even when the person he is doing the "favor" to says no.
This whole mess wouldn't have happened if he had listened to Jade.
When he was Paulphidian the first time he wanted to make his friends happy. Now he he is greed "enlightened" he only cares about doing things his way no matter what.
1. Oh come the hell on. You act like this is new. Paul has been pissing off jumped up magical lifeforms since day one practically. His actions and plans flat out killed a Lord of Order and Chaos. Now, Chaos might not care, but you think Order isn't pissed? I didn't hear anything about that. Grayven flat out pushed the Darkseid button repeatedly, how much shit did he get? Let's face it, some people are pissed off because it was their religion that got poked, that Paul was completely irreverent towards. Zoat has had the two characters alternate between flat out insulting Zeus to earn a thunderbolt, had Odin strike a deal with NAZIS, but this....oh THIS has just crossed the line! Puh-fucking-lease.
Also, what other options where available? Just because you say there were, don't mean that there were. Paul didn't have a line to Yahweh to ask if he had a cup of forbidden fruit.
2.At no point did Jade say at the beginning "No Paul. Do not do this for me." Now, she has the excuse of having no clue that he really could. Now, he stopped resurrecting her victims as soon as Jade demanded it, but let's face facts. Paul was going to do Lazarus pit research whether it tied into Jade or not. He was trying to take out two birds with one stone, and put forth a nice gesture. It didn't work how he had hoped. But did pay off in other ways.
3. This is incorrect. Paul has pretty much done whatever the hell he wanted this entire time. He MIGHT have held back on more extreme things for fear of upsetting his group, but that's about it. He has not once held back on scolding someone who was doing something he didn't like. Furthermore, besides working to make his group...well HIS group mentally so that his powers would work more effectively, Paul was only ever held back by the oath over his head, and his desire to keep his word. He isn't a rookie any more, worrying over the impression he was giving to the "higher ups". Add to that, that they failed in a pretty big way in his eyes, then he goes off to found an entire new Lantern Corps, is it any wonder Paul is now holding himself at the Justice Leagues level, instead of a "side kick" they can boss around? Plus, along with the rest of the team, Paul openly disobeyed orders at the drop of a hat, especially when that's what his team wanted to do.
4. Really? It wouldn't? So if Paul would have listen to Jade he wouldn't have stolen a fruit from the garden? Beyond that, if you think Paul wasn't going to research the Pits, then I don't know what story you've been reading. At best, it wouldn't have involved Jade's victims if he had been convinced not to by the argument she DIDN'T give.
5. HA! Beyond the fact that Paulphidian did what he wanted to UNLESS asked not to, I really don't know what you're talking about. He wanted to make his friends happy, had ideas on how to do that, and then held back somewhat when they flat out asked him to. Remember when he/they almost tore the mountain down to make Kon's armor? He talked to exactly ZERO people about doing it, and scared the hell out of them when he did. Did he ask about moving the moon? How about the cake?
Finally, at what point has Paul done anything since coming back to earth that his FRIENDS asked him not to do? At what point during this time has Paul set out to do something, been asked/told not to by the person he was doing it for, and then done it anyway? Jade said she had some issues with it, wasn't sure it would help, but I don't recall her saying "Please don't." and then Paul did.
Moving back, remember Nabu? Paul did things his way right then and there. Did he ask permission to colony drop the Citadel? What about the total societal shift he punched through on the eye ripper planet? How about all the rings he handed over with Guy sitting right there? The Anti-GL battle station and the GOD DAMN Weaponer recruit?
Paul has ALWAYS done what he thinks is best.