I would also note that we have had a number of people saying things like that who hail from Europe, because I’ve flagged about three of them myself.
Yes, it’s not an exclusively US problem, but your comment did prompt me to think about something, and that is that in the US, “conservatism” is much more of a coherent worldview than it is in the UK.
Boris Johnson, for example, isn’t actually very conservative at all. He lives with his girlfriend in his official residence while still married to his second wife, who is the mother of four of his five or possibly six children. He is liberal on topics such as LGBTQ+ rights and abortion (although he has rather conspicuously failed to take part in any vote on abortion in the House of Commons) and is a self-described feminist. He is opposed to capital punishment. Although he wants to end free movement of people from EU countries, he is emphatically not opposed to immigration and has proposed an amnesty for illegal immigrants. He has praised multiculturalism and specifically highlighted his admiration of Islamic civilisation and his own Muslim ancestry. His plans for public spending on infrastructure and services (especially the NHS, state schools, and policing) are the most generous since the Labour Party was in power. He is also a strong environmentalist. He revels in a reputation as a classical scholar and enjoys quoting Latin authors off the cuff.
What I see with US posters on CAF isn’t necessarily people who are more conservative than some European or Commonwealth posters are on some issues, but people who are more consistently conservative, people for whom conservatism is a more coherent set of beliefs. I know some
very racist people in the UK, which in some instances, oddly enough, makes them keen supporters of the EU, since the EU provides white immigration and reduces reliance on African and Asian immigration. Some people, of course, are against any immigration at all and are as hostile towards a Pole or a Romanian as they are to a Pakistani or a Nigerian. But British people who are against immigration or even actually racist don’t correlate with any other particularly conservative position except perhaps taking a harder line on law and order.
I think it’s fair to say that while in the US there is of course a diversity of positions on many issues, there is an ideological viewpoint that brings together a range of issues and that there is some correlation between favouring free-market capitalism, low taxation (or even no taxation!), low public spending, small government, a reduced role for federal government, states’ rights, subsidiarity, and being anti-abortion, anti-gay marriage, pro-2nd Amendment rights, pro-death penalty, anti-universal healthcare, and anti-welfare, as well as being sceptical of elites (such as academics and the media), sceptical of environmentalists and scientists (partly out of fear of higher taxes and more government interference), and regarding American culture as essentially white and Christian. That is just an impression I get from some commentary that I see coming from the US.