I believe the lack of harsh action towards Israeli regional crimes is the current dependence economically, militarily (like most of the world outside of China - even Russia is struggling hugely despite full support from China, North Korea, India etc.) on the US (mostly) and West.
What worked back in the 1970's (Arab oil embargo) will not work today because the US itself is the largest oil producer in the world (produces almost twice as much oil daily as KSA). Nor any lack of gas.
So Arab leaders, regardless of ideology, governmental form have the exact same challenges in this regard, some more, some less.
Also have in mind that the wealthy/stable/developing/Arab countries not in conflict/civil war, are focusing on (rightly so) on economic, scientific, military, infrastructure, overall domestic development, which is way they cannot afford an all-out conflict with the West.
For any nation or people to develop you need peace and stability, something, unfortunately, that large parts of the Arab world have not had the luxury to enjoy in the past many decades.
All of this is tied together.
Another huge weakness is lack of trust/genuine cooperation between Arab leaderships/countries, outside of few examples, because based on history, leaders are fearful of being overthrown by their own or conspired against. That and powerful outside forces not wanting to see this.
The solution is simple, Arab unity (economic, political and military - regardless of overall ideology - not out of some romanticized notions - because in terms of state level/geopolitics religion, ancestry, kinship, language, race etc. matters little or at least not what it once did everywhere in the world), not out of "blind love or unity" but because it is what best serves the larger Arab world.
Most importantly it is what the vast, vast majority of all Arabs would like to see in every Arab country. Every single opinion poll confirms this. This is repeated by Arab Islamists (all Islamist movements in the Arab world in the past few centuries - more modern era -emphasized Arab unity and had an Arab "nationalistic/patriotic/unifying" element).
All this does not mean that we should or could not cooperate or have good relations with non-Arabs in the region, whether Kurds, Iranians (regardless of their individual ethnic groups), Turks (regardless of their individual ethnic groups) or even Jews/Israelis (once peace/end of conflict/people pay for their crimes), West, East etc.
Point is that Arabs have to take full ownership (will occur eventually) of the region (Arab world) and its internal politics and hostile foreign interference/meddling, regardless by whom, should not be accepted.
As for Hezbollah specifically, as I have written many times, and I believe this opinion is shared by most Saudi Arabians and Sunni Arabs overall, I have nothing against the average Hezbollah foot soldier. The problem is some of their leadership which is overly tied to the Iranian regime and have an agenda that is not healthy/good for Lebanon as a state and the overall Arab region.
Anyway, let us also be honest here, Arab states/movements being represented by militias/non-state actors (not recognized internationally) is a recipe for bad PR. It is the perfect ammunition for Zionists and Israel to label entire countries/communities as terrorists.
Much harder to do such kind of dehumanizing/propaganda against actual national armies. Also much harder for the international community to impose sanctions on national armies etc.
A lot need to change for the better but I am seeing clever leadership from young leaders like MbS and Tamim Al-Thani on some fronts to reach out to Shia Arab religious figures/communities/movements.
KSA for instance has very good ties (or at least cordial) with likes of Muqtada al-Sadr (who is no angle or his movement but who is in the region?), El-Husseini
https://en.wikipedia.org/wiki/Mohamad_Ali_El_Husseini (Lebanon)
and local Shia community leaders in the GCC and Zaydi religious leaders in Northern Yemen that are not from the Houthi tribe.
For instance KSA is hosting the North Yemeni Zaydi royal family (Imams) that was toppled in 1967.
en.wikipedia.org
I personally have clear and obvious disagreements with the Shia Twelver doctrine and their beliefs (however I accept them as fellow Muslims - most Sunnis, regardless of sect, and Salafi school of thoughts do as well - in particular non-scholars and ordinary people) but that should not be reason enough for any meaningful hostility or for countries to have never ending civil wars/conflicts/instability.
