Originally posted by @vivify
The west, especially Great Britain and the U.S., has played quite a role in destabilizing mid-eastern and Asian nations. See India, the Korean peninsula, Israel and Palestine. Their invasions and divisions of those nations continues to have a terrible impact on those nations today. The U.S. continues war-mongering in those regions today; see Iraq, Yemen, ...[text shortened]... y much the entire world.
So yes; there is justification for "laying the blame" on the West.
I have to take issue with some of the examples you have used to illustrate your point. The Korean peninsula was colonized and severely damaged by Japan (definitely not a western country) and was liberated after Japan's defeat in WW2. South Korea today is wealthy and prosperous due to help from the West and the adoption of western style democracy. It cannot blame the nations that liberated it from Japan's tyrannical grip as without the West ethnic Koreans might have been exterminated or been replaced by settlers from Japan. North Korea is much worse off and was influenced by the USSR (not a western country).
The concept of India as a nation did not exist until British colonialism artificially created British Raj. India is a very religiously and linguistically diverse region and was historically split into hundreds of kingdoms. The fact that it was so divided is exactly what enabled the British to exercise control over the subcontinent. India gained independence in 1947 (more than 70 years ago and more than enough time to eliminate poverty if it had adopted an economically sound policy, unlike the failed form of socialism that was in place until the 1990's). Many other countries ( including many former colonies) who were as poor as India in 1945 are now rich and powerful. For example, Germany and Japan were utterly destroyed by world war 2 and there was almost nothing left in either country in 1945. Both adopted capitalism and became wild successes.
Japan was the second largest economy in the world after the U.S for much of the 20th century. Germany was 3rd or 4th. Malaysia, Singapore, the UAE, Qatar are all rich and successful today and have been independent for less time than India so it's wrong to blame the bad economic situation entirely on the British as other British colonies have undergone similar or worse situations and made a success of themselves despite colonization. The fact that India is still very poor is more a factor of poor economic policy from independence to the 1990's than non-existent postwar meddling by the west.
Korea and India are poor examples of negative western meddling and you have neglected much better examples such as China, Vietnam, Iran or Afghanistan.
Germany invaded and conquered almost all of Europe 75 years ago (similar timeframe to when Britain left India), devastated its cities and committed widespread genocide yet most of the countries which it severely damaged are successful today and the few that are not cannot blame Germany. The same can be said of some of the examples you have used with regards to the West. To continue to blame Germany is to bring up the eternal bogeyman, which distracts from the unsuccessful European country's own failings.