A nice short compilation. But I dont agree with your conclusions. Hegelian-Marxist thought hasnt caused any impoverishment in human thought. Actually more than a century old experiences showed us that Hegelian-Marxist thought had some significant impact on varies fields and improved the richness of our thinking and knowledge. And also I should mention that 'inclusiveness' cant be something negative when we relate it with an idea, thought or philosophy. On the contrary it is something wee seek for. At this point the more important thing is how the thought became inclusive, by fiction or by scientific data? That is the main case. Hegelian-Marxist thought can be considered not as a philosophy but a 'method' to interpret the universe. Thats why it is not concrete and it is totally open to progress cause it based itself on the scientific data rather than idealistic uncertain speculative concepts.

Also there is no direct relation between Hegelian-Marxist thought and totalitarian or authoritarian examples we see in history. Bad examples cant be attributed to the source, thats something critical for us to conform. And lastly Hegelian-Marxist thought never ignore the individual. On the contrary individuality has a very important role in this method. Especially interpretation of history by Hegelian-Marxist thought show the unwavering relation between society and individual. Maybe the reason for this kind of misunderstanding is because of very frequent emphasizings of society as a whole in the name of defining the methodology of history.