It's always like this, extremists dance to each other's songs. Hamas and Likud were always reinforcing each other to a point I'll always have this totally unfounded theory that Hamas and Likud were buddies simply because they helped each other stay in power.
This isn’t a conspiracy theory as it was Israeli policy. Netenyahu allowed money from places like Qatar to flow to Hamas because they prefer Hamas in power over more moderate organizations like the PLO because they wanted to use it to delegitimize the Palestinian cause and talks of two state solutions on the global stage. Netenyahu has verbalized this exact reasoning himself and past Israeli government officials have stated this is the goal. It’s much easier politically to encroach upon Palestinian lands if you can paint their leadership as being irrational extremists who are impossible to negotiate with.
They are going to run the same play in Lebanon to justify conquering southern Lebenon as well. Instead of helping the Lebanese government tackle Hezbollah in a collaborative effort, they will simply label their government as incapable of the task regardless and justify their occupation of southern Lebanon as necessary for their security.
Israel is a colonial state. They want Gaza, West Bank, parts of Syria, Lebanon, and possibly Egypt and Jordan to expand their Lebensraum. They want extremist leaders in these areas to make the casus belli easier to declare.