In hindsight, is the Arab Revolt the biggest mistake made by Arabs?

Like, let's face it, the British played Arabs (and their leaders) like an absolute fiddle. Promising their own united Arab state in exchange with helping the British fight against the Ottomans.

They literally didn't keep their promise, and together with the Fr*nch they carved nice pieces for themselves out of the Arabian peninsula and the Levant and even took over Palestine.

I honestly struggle to find another geo-political fail as big as this one in Arab history.