Yeah, why should the Soviets take the blame for Poland's deficiencies?
They should not, who says they should?
But the only way how Stalin contributed to modernization of Poland was taking our backward eastern lands and giving us in exchange some lands with better infrastructure (albeit heavily damaged by war and partially stolen by the Soviets who transported most of captured industrial facilities to Russia). But Poland lost its cultural centres of Lwów & Wilno and many historical monuments, as well as some natural resources (e.g. oil fields in East Galicia). As for lands acquired from Germany, Silesia was valuable but the rest of it was pretty much also a backwater, just not as much of a backwater as, say, Polesia or Volhynia.
Coming back to Rhodesia, I agree with CH, Luiz and T2N.
As for land redistribution in Rhodesia - it was still pretty generous compared to what was taking place in much of Europe in the 1900s, where aristocratic landlords were very reluctant to give away their land to peasants. Remember that whites in Rhodesia were essentially that, landlords who owned so much because they had created that country (and they thought that they deserved being privileged because of their essential contribution to the creation of Rhodesia).
I've read the chapter about education, and what can I say? - it was unjust, but things were gradually improving for everyone, not just for whites.
Authors even admitted that Rhodesia's education for Blacks was still better than education for Blacks in other African countries:
(...) Operated on a non-racial basis, such a policy might well win the approval of many concerned with education in developing countries; indeed, looked at outside its political context, the present programme could offer a great deal. (...)
However, authors immediately point out the lack of equality (e.g.
"so what that X have good situation, if Y have even better"):
(...) But it cannot be so divorced from its context. The fact is that Africans are offered an inferior system, while Europeans receive educational advantages which few developed countries can boast. (...)
OK... Mugabe has fixed that inequality - today education in Zimbabwe doesn't work, so everybody is equal[ly uneducated].