No, it is not. It is an occupied enclave inside Israel where everything going into and out of Gaza - land, sea, and air** is 100% controlled by Israel. That is why the UN and all major human rights groups refers to Gaza (and the West Bank) as "occupied territory."
** The last only theoretical because Israel bombed Gaza's airport and refused to allow materials in to rebuild.
Your "history" of the demographics of Palestine is belied by Ottoman census data - the last in 1922.
Your fictionalized history of the ethnic cleansing started by Zionists about 100 years ago is just that: Fictionalized history. Like the US history of our march west, it has grains of truth but leaves out the ethnic cleansing and genocide parts of the story.
Israel is a settler colonial country by dominated by mostly-white immigrants to the area. Like all others, it was born of and can only be sustained by constant violence against the indigenous peoples until they are all killed or subdued.
If the internet and social media had existed in the 1800s the videos from the US would be equivalent to those out of Gaza today, just with less lethal weapons.