Religion provides its members with known long standing moral guardrails. While atheism and secularism, which believes in relative morality, does not always have known guardrails, or it has guardrails that can be easily manipulated by self serving politicians and social fads. Fake news works better on the anti-religious since their guardrails are not set in long term stone, but can move with the whims of supply side politics and clever opinions.
If you look at the Supreme Court of the USA, which is supposed to be about law and above politics, it is populated mostly with people with religious convictions; mostly Catholic. It is not full of atheists, since the atheist foundation of relative morality is not based on long standing historical antecedents such as in the Constitution and fixed law.
Politicians, on the other hand, are like used car salesmen with two faces. This is better represented by atheists who have more moral flexibility, such as the ends justifies the means. A religious politician, by having fixed guard rails, makes them more vulnerable to misrepresentation, than someone with relative guardrails who can change with the tide or lie; ends justifies the means.
Presidential candidate Biden was raised Catholic, but his political style is more connected to atheism. He can be two faced about what he stands for. He will tell moderates one thing and extremists another. Trump who is less religious on paper but has strong fixed moral guardrails is the same all the time. One knows where he stands, since this does not change. This fixed nature make him an easier target to those who disagree with his policies and who follow popularity fads.
If you look at censorship and the dual standards of social media, this is connected to atheism and not religion. Religion is about freedom of speech. Biden's corruption and the media censorship is OK in the world of relative morality. If this was Trump his fixed values would making it harder to avoid being judged by them. It is harder to judge a two faced person with relative morality since there is no constants.