The Times of Israel article's title is "For years, Netanyahu propped up Hamas. Now it’s blown up in our faces". The article's lede is "For years, the various governments led by Benjamin Netanyahu took an approach that divided power between the Gaza Strip and the West Bank — bringing Palestinian Authority President Mahmoud Abbas to his knees while making moves that propped up the Hamas terror group."

You are not understanding what the article is saying, because you're mixing up different Palestinians. Palestine has a left wing party, the Palestine Authority, and a right wing party, Hamas. The Palestinian Authority, led by Abbas, recognizes the state of Israel and wants a two-state solution that also establishes a Palestinian state. Hamas does not recognize the state of Israel and wants to destroy it. Netanyahu is against the Palestinian Authority because he's more against giving legitimacy to Palestinian statehood than he's against war. He funded Hamas to delegitimize Abbas/Palestinian statehood/two-state solution/peace.

The PA still uses a pay to slay program encouraging the murder of Israeli civilians within the 67 borders.

President Abbas has a PhD in holocaust denial.

Calling the PA left wing isn't accurate. It's also bent on the destruction of Israel and the Jewish people.