> Maybe not under any conditions but the conditions are not met, maybe never will be.
Maybe so, but a key point is that the conditions have not been met anywhere where people tried to force socialist revolutions. The idea that you could manage to make socialist revolutions work in underdeveloped agrarian economies stems from people like Lenin and Mao, not Marx. Marx, on the contrary warned against it decades before.
> Simply because you were born, doesn't mean you are entitled to anything.
There you are in violent agreement with Marx.
Marx spent a lot of effort arguing against the idea of a welfare system that would give everyone the same without contributing. E.g. in. Critique of the Gotha Programme, he goes as far as pointing out that too much emphasis had been put on redistribution and "fair distribution" and points out various unintended consequences of the proposed program that he saw as counterproductive to the development of socialism and later communism.
One of the most famous tenets of Marxism is exactly "from each according to ability, to each according to need". There's nothing there about being entitled to anything just for being born. On the contrary, there is an expectation of duty. Only those totally unable to contribute are left off the hook if they want to expect society to in help.
The "welfare entitlement" comes from the social democrats - the beginnings of which were the main influence Marx was arguing against in Critique of the Gotha Programme.