Facts have a definite conservative bias, going by the definitions of “conservative” and “liberal”. Conservatives may not always be right, but liberals are always wrong. (This is because everything is political to liberals.)
The article’s thesis is definitely hogwash (liberals have pestered conservatives since Eve ate the apple), but one could reasonably argue that the Internet encourages impressionable teenagers to engage in stupid liberal behaviors.
Are people less likely to express “dissenting views” on social media than in real-life, face-to-face situations, as the research claims? That seems unlikely to me. The Internet is notorious for inducing people to go “overboard” and say things they would not say face-to-face. So I suspect there is some sort of agenda behind this research.