Marx himself was pretty clear that to enact his ideals would involve violence and death. Most of his predictions were wildly off, but Venezuela is only the latest in a long list of countries where that has come true. None have reached his predicted end goal of paradise.
While Marx and Engles disagreed, Marxism is an ideology, and as such it oversimplifies problems and solutions. That oversimplification, no matter which offshoot we choose, will not deliver. There is certainly no evidence in the many times it has been tried that it will be any improvement for most people.
Yes, there are major problems with corporatism and capitalism in our current societies that need addressing, but I think it's about time people moved away from thinking that the solution to the problems in capitalism must be some form of Marxism. We can challenge the corporate controls of society without thinking that moving them all into state-control under some sort of 'working class' imagery which has never lasted will solve anything. Socieities doing things better or more equally does not equal Marxism. Marxism has specific criteria and we've seen over the last century+ that it doesn't work and those arrogant enough to think they could do it and not be corrupted by power are exactly the sort of people I don't want in charge.
And, I have absolutely no idea how anyone would put France or any of the Scandinavian countries as revolutionalist Marxism or revolutionary socialism unless stretching the definition so thin to the point of nonsense - they're all capitalist societies and none of them have had any mass movements that have seized power to give control of state functions to the working classes. Having regulations on businesses, a welfare state, or better unions does not equal Marxism. I mean, in the US, lots of people (including one of my high school history teachers) called the UK socialist because it kinda looks it in comparison but having a few elements in common doesn't make it the same thing.
Also, whether a doctor or janitor contributes more depends on the individuals. Sanitation is vital to survival as is healthcare and treating janitors and other sanitation workers jobs as something that can just be shared ignores that and their importance. A doctor who doesn't listen, who abuses their power and patients, and I could go on for days on this is not more valuable to society than a janitor who does their job well just because they're a doctor and most aspects of healthcare could be and currently are shared out. I wouldn't want any system where sanitation and janitors are considered unimportant.