I think a lot of it is because there's so many more well-funded right-wing influencers/grifters than genuine liberal or left-wing influencers. It's much more profitable to take advantage of young men's anxieties and insecurities (to sell fungus pills, get-rich-quick plans, or whatever), than to genuinely discuss things from a liberal or especially left-wing perspective.
Its a cliche but they also promise easy answers to hard questions, blame others for problems they caused themselves or at least did nothing to get out of. The old tell 'em what they want to hear rather than what they need to hear.