Those Arab Christians probably understand that they are quite likely to be shot on sight by the IDF.
Large numbers of them fought in the Syrian armed forced against Israel in multiple wars, including on the Golan, and those also mostly hate Israel with a passion.
Yes, its true, such Christians have lived and fought on both sides, but they did have some protection - some - from the current regime.
It is a complex situation especially with the Druse.
I do not envy them their predicament at this time.
My brother in law is from Aleppo. Armenian Christian drug out of bed on his 18th birthday to fight against Christians in Lebanon. His father paid his way out of the Army. The whole family is now living in the US.
Syria is a sewer!