They want to get rid of the religious nutters who are a threat to their respective dynasties.
40 years of appeasement in places like Saudi have resulted in no change, so now they are going full liberal.
Unlike Paki they aren't blessed with 1 billion infidels across the border, so when the disease of IM DA TROO MUSLIM, NOT THE SHEIKH/SULTAN/AMIR! OVERTHROW THAT KUFFAR APOSTATE ENEMY OF ISLAM! strikes, their heads will be on the line, not some Kaffirs.
Israel doesn't count because we've seen the results of the Arab-Israeli wars when the Arab world was still filled with competent people.
Aside from this, Farsi g*ndmasti in the region has increased over the years, Arab "republics" are already in thrall of Farsi, and Arab Monarchies are on the menu along with Israel.
There is also the (((Turki))) under Sultan Erdogan who have now taken on the mantle of being TrueMuslims™