Ok the first one is definitely a hit piece, but I agree with it in general. I'm sure that Bibi and his friends decided to negotiate with Hamas because it put the full peace talks on hold. But it is ignoring that it allowed for them to work for better wages and get necessary supplies in return for a more peaceful relationship. And had they completely blocked things they'd be further criticized for that. I don't like Bibi or Likud. Don't agree with several of their platforms or conclusions they have reached. That being said, I think it would be unfair not to discuss those conclusions. They have concluded that a full Palestinian state would be more like the situation with Gaza than with the west bank. In fact, before he was PM Bibi said the following concerning the disengagement from Gaza

Only we in the Knesset are able to stop this evil. Everything that the Knesset has decided, it is also capable of changing. I am calling on all those who grasp the danger: Gather strength and do the right thing. I don't know if the entire move can be stopped, but it still might be stopped in its initial stages. [Don't] give [the Palestinians] guns, don't give them rockets, don't give them a sea port, and don't give them a huge base for terror.

And it became exactly that all while he wasn't in charge.

They do not believe Palestine will be peaceful if they get full statehood, but they will be a sovereign territory which will complicate matters even more. I disagree with this conclusion, but it isn't nearly as nefarious as you're implying.

The second thing just belongs in the same realm as other conspiracy theories. Neither Palestine or Israel argue he was assassinated. France, where he was treated, state he wasn't assassinated. At most a swiss group says maybe it happened. The funny thing is, the theory is that he was assassinated because he stood in the way of peace and they wanted a new guy to negotiate with after camp David (which is why they negotiated with Abbas in 02-03).