The author probably could have made a more coherent argument if he'd included some of the non-liberal luxury beliefs. There's huge evidence against them.
If this article seems biased and it probably is a bit, that shouldn’t take away from the reality of how these attention seeking narcissistic people on both sides are holding and broadcasting these views not because they believe in them but because others elevate them in society for them or shower them with praise.
If the article had mentioned corrupt tv preachers making money and having power by claiming to be Christians then that would have probably helped not make it seem so one sided.
I know people who say “I’m a communist” but they don’t actually do anything to back up that statement and are effectively tourists. I often say to them that they and their other communist friends could form their own commune, invite the poor and needy to join them and share their wealth to support each other and be equal. The problem with that of course is that camera lens the person wants to buy, and the expensive craft beer they like drinking and the new MacBook they want would all go out of the window whilst people they don’t know would suddenly have more food, shelter etc.
Truly good people don’t generally feel the need to tell people about the good things they do. You can find them volunteering quietly at food banks, churches, after school clubs, synagogues, mosques, youth sports leagues etc.
Anyone in this day and age who goes around telling others that they are a flat earther is either mentally ill or trying to be more interesting and is attention seeking.