I mean, it’s not like I know much about civil engineering, or trade policy, or diplomacy, or law, or policing, or military and defence issues, or agriculture and food stability, or economics, or education policy, other than that most of these are things you can get degrees (or equivalent) in, and if I spend three years studying each of them I’d still be a much of a noob in those topics as someone who thinks “lines of code is a good measure of productivity” is in the world of software.

I still believe democracy is better than any known alternative; it just isn’t, y’know, flawless.

Joking aside, it's taken me lots of effort, but if anything is important to me, my life, or my loved ones, I double check it, even if I agree with it or I'm naturally inclined to believe it. I've also learnt to love to stand corrected, and to say that I'm wrong.

But that's unfortunately above what most people I deal with on a daily basis are able or willing to do, supremely so when you bring religion or politics in the mix. And that's normal, and thoroughly studied[0]. That also means that, in many subjects, people already made up their minds and aren't actually taking decisions, as you suggest they are, but having psychological knee-jerk reactions.

[0] https://en.wikipedia.org/wiki/Belief_perseverance

Which is fine, because (at least in the US) we don't live in a democracy. These views are very compatible with a plutocracy, which is what we currently have.

Respectfully, I call bullshit. There has always been a lack of critical thinking, we just didn't have the internet to bear witness. I think people are complaining about a lack of critical thinking more now because there are more educated people around to think critically.

So I agree that we need critical thinking, but let's not be alarmists about it just because some people are dumb or voted dumb people in.