I think I had better reiterate my points.
First, it's not proven that colonialism keeps countries poor, because previously colonised countries (including some of the most egregious examples of colonialism) are now rich. Therefore you cannot, as many people do, blame all the problems of poorer countries on colonialism and leave it at that.
Second, what does keep countries poor (ie, over time) is poor administration, particularly corruption.
Third: this is not a defence of invading other people's countries (militarily or economically).
I've only really mentioned two countries - Ireland and South Africa. Both experienced heavy colonialism. The former has a population lower than 170 years ago because of one hell of a famine that the British government simply let happen. The latter was brutalised by 4 decades of apartheid and colonial governance before then. One is rich: one is poor. In one, if you bribe a public official you'll probably be prosecuted. In the other, you'll get a favour. Charles Haughey aside, guess which is which.
I accept that a colonial past may have a role in developing a corrupt present if the colonial administration was marked by corruption. I think I would also accept that if a country's administration is, on independence, impoverished, then it is difficult for honest people in that administration to prevent corrupt people from taking advantage. I would also say that in many places the issues are ones that predate colonialism and never went away. But these are problems that some countries have overcome over time, therefore disproving your point.
You say I said “in my view it [ie poverty] has nothing to do with colonialism and everything to do with self-entitlement” about poorer countries. But actually if you read my post you will see the 'it' I was referring to is the behaviour of Johnson, Cummings and co and making the point that if politics is allowed to degrade, a country's prosperity won't last. But as you mention it I think that any person's corruption has an unhealthy dose of self-entitlement regardless of their background. I think that's obvious, to be honest.