Semi-feudalism was eliminated in the (Arab) Muslim world at least 60-70 years ago; granted it existed prior.
It was fairly easy to take out semi-feudalism in the Arab World because it is very hard to justify such a system under Islam. The semi-feudalists had used distorted readings of the Koran to justify their oppression. For instance the fact that Mohammad said that some are rich and some are poor and this is a normal thing was given as an excuse for semi-feudalism.
Most Muslims knew intuitively that this excuse didn’t fly well in an Islamic sense, so the new Arab nationalist (mostly socialist) regimes found it easy to dismantle semi-feudalism.
I know that Palestine was semi-feudal in the 1930’s, and Iraq and Egypt were in the 1940’s. Massive land reforms in the 50’s Egypt and Iraq took out semi-feudalism. But it lingered elsewhere. In the early 60’s, your average peasant in Yemen had a picture of Nasser on his wall. Nasser was seen as a great hero of the Arab working and peasant classes.
When the Arab nationalist and socialist Ba’ath Party came into power in Syria and Iraq, one of the first things they did was a land reform. It was easy to do as the semi-feudal system was hard to justify Islamically, and a more equitable or socialist economics was very easy to sell in an Islamic sense.
This is because if you read the Koran, you can see the Mohammad, for all his flaws, was basically a socialist. This is why even hardline Islamist organizations like Hamas are virtually socialist. When the PLO ran Gaza, Hamas ran the social services that should have been but were not run by the state. Now that Hamas is in power, they have a huge social safety net.
Semi-feudalism will be seen as very un-Islamic nowadays, except in the case of Pakistan, where a huge substrate of Indian and Hindu culture virtually neuters whatever socialist advantages Islam may bring.