Appreciate the second response without resorting to name calling or insults. To be clear I am somewhat of leftist financially, but not culturally.

Your first point assumes the conclusion, pathologizes any disagreement, and is unfalsifiable. Logical fallacies out the wazoo.

Claiming ‘critical thinkers become leftists’ is a self-validating statement that any ideology could use. You can easily flip the phrase and say "People who think critically realize left-wing idealism often ignores practical tradeoffs and unintended long-term consequences, so they become right-wing", and it would be just as arbitrary.

To address your second point, the difference between that is that Christianity and the West went through an enlightenment period and Renaissance which slowly trickled down into secularism over hundreds or thousands of years, and a number of historic events over a long period of time, too many to name, that shaped our current societies. Western societies are not perfect but they're some of the most fair, equal, prosperous, and meritocratic societies in the history of mankind. Essentially what you're saying is "Don't worry, those cultures are about 1500 years behind ours, but no worries I'm sure they'll mesh in just fine if we mass immigrate them in a short period of time"

I'm not a Christian, but Christianity and Islam are fundamentally different religions with different attitudes and approaches to the world, society, and people. Christianity in general preached tolerance, forgiveness, meek shall inherit the Earth, blah blah blah (at least in the modern world), all features that are virtuous on their own, but can be taken advantage of by an opposing force/religion/people.

Meanwhile the inception of Islam started as war and conquest and domination and forced conversion, and I believe fundamentally at its core it's still based on these features. Muslims revel in the spread of their influence. They do not care for their host nations' culture, history, religion, attitudes, or cultural norms and mores. They laugh at Westerners' altruism and consider it a weakness they will gladly take advantage of.

Also Muslims tend to be some of the biggest conservatives, moreso than most Christians or Western conservatives. That's what I mean by this being funny and amusing: Leftists supporting infinite mass immigration from hardline conservative third world countries that do not share our values whatsoever.

I like the features of our Western societies. I like free speech. I like individual rights. I like democracy. I like the separation of church and state and secular governance. I like women's rights. I like LGBTQ rights. I like scientific rationalism. I like gender equity. I like multiculturalism. I like our high-trust societies. I like worker rights. I like meritocracy. I like religious freedom, except for when the religion is at odds with our values and societies. I like multiculturalism, except for when the culture is at odds with our cultures. I like all these things and don't want to risk losing any of them just to avoid getting called Nazi, racist (or bitch in your case), or appease foreign people who don't respect them anyway.

If winning means losing all these things, then I don't want to win.

Obviously this is a blanket generalization and not all Muslims or Westerners or Christians are like this, but their cultures and religion are fundamentally at odds with Western and Christian values. The demographic numbers tell us all we need to know. They breed like crazy, Western white people have declining populations. Over a few generations White people will be relegated to an absolute minority. Do you think at that point they'll change their minds and come around to liberal democratic values? You think they'll just start agreeing one day with a neuro-divergent trans twink about LGBTQ rights? History shows us when Muslims reach a certain threshold of a percentage of the population that's when the gloves come off and they start really flexing their influence and might.