The colonialist perspective is approximately useless for interpreting the Gaza situation, because (1) the Jewish homeland had been colonized for millennia and there's no clear statute of limitations on how long it matters, and (2) Gaza was decolonized by Israel (in contrast to the West Bank) and yet that seems only have made any peaceful resolution more difficult.

The liberal, human-rights-based approach is more useful, but you fail to mention three extremely critical parts of the issue which leads one to believe that you don't in practice care about human rights per se but rather opposing Israel and are using human rights as a pretext (possibly subconsciously). It's quite hilarious that you choose to mention flimsy excuses by liberal thinkers, and then take up the mantle of liberalism only to yourself construct the flimsiest of excuses to not confront the challenges.

First, you fail to mention Hamas at all. Given that the Israeli government is constantly talking about Hamas this, Hamas that, failing to even bring it up exemplifies that you're uninterested in actually examining the situation from an intellectual perspective, but rather are taking a purely rhetorical stance.

Second--admittedly, this is difficult to do without mentioning Hamas--you fail to mention that the accepted legitimate government of Gaza attacked Israel with the militarily-useless aim of murdering large numbers of civilians, succeeded, and then proceeded to pick the most densely populated areas of its own territory to fight back against any response, and announce that it will keep it up forever, and not try to come to any peaceable resolution (e.g. “The al-Aqsa Flood is just the first time and there will be a second, a third, a fourth because we have the determination, the resolve and the capabilities to fight."). This is a colossally inhumane approach that is not remotely supported by universal liberal values.

Thirdly, you claim without evidence that Israel is held to lower standards than anyone else, but it would be extremely easy to compare to, say, Turkey's attitude towards the Kurds or Saudi Arabia's intervention in Yemen, much less anything happening in Sudan, Syria, or within Yemen itself.

Now, this is not to say that there is not a huge amount of legitimate criticism that could be made of Israel from within a traditional liberal humanist framework.

It is only to say that you're doing an atrocious job of it by failing to engage with the key realities of the situation.

You're writing propaganda--maybe which you've bought yourself, so you don't realize--not a defense of liberal values. If you want to do the latter, great, but take a step back and try a more thoughtful approach.

(Note: I am not claiming that there isn't also pro-Israel propaganda. There is.)