Leftists generally accept rich folks sympathetic to the cause, even though they technically don’t belong to the masses. For example Marxists and anarchists alike generally accept Henry David Thoreau and Leo Tolstoy as leftists (even though the latter was born into great wealth), and leftists generally accept Dan Price (#DanPriceSeattle on twitter) even though he is a boss (i.e. not off the masses).
It is actually quite fun to read Dostoevsky’s Idiot with that in mind that Dostoevsky might have written Prince Myshkin (the Idiot) with Leo Tolstoy in mind. Dostoevsky was very much not a man of means, whereas Tolstoy literally came from a line of nobility. To Dostoevsky, Tolstoy’s talk of the impoverished must have sounded like he had no idea what he was talking about.
That being said, I do think that romanticism of the poor is a really old school mentality, maybe some boomers sometimes still engage in it, but I doubt that you’ll find contemporary leftists engaging in it. Today’s left is much more AOC and Greta Thunberg complaining about how shitty life is for the poor (with a substantial retweet history each backing up poor people calling for it).
Also, to be free of the "tyranny of capitalism and fascism," I hope that those are two different categories. Capitalism and fascism are near polar opposites.
It's also important to understand that leftism necessarily ushers in tyranny. It is impossible, not just in practice, but in theory, for leftism to be implemented without an authoritarian state. If you attempt to get around this constraint, it will only be by you failing to describe a state whose outcomes will fall within the objectives of leftism, or by describing an authoritarian state by any other name (syndicates, guilds, unions).