I always find it funny when people use the phrase slippery slope, not realizing that it is literally a logical fallacy.
The far right can get bent for what it's worth, but most of the issues people attribute to capitalism are very far from exclusive to capitalism. No matter what socioeconomic framework you go with, you're probably still going to need to go to work, deal with shitty bosses, insane bureaucracies, mid life crises, not having the motivation to read that book you bought 3 years ago, your furnace dying in the middle of winter, etc.