

Or do jou mean my device isn’t representative?
Yes, this. Most devices it just works, and a small minority will work with a little effort. A miniscule number will be like yours. It isn’t representative of the average experience. It’s an outlier.
Out of curiosity, how long ago was this? It very well may have the support now, though if it’s from some manufacturer using proprietary drivers for their webcams, for some crazy stupid reason, then maybe not.
Must? No. I said as much. It does make it a reasonable assumption, if the other assumptions are true. If I go to a hospital, it isn’t crazy for me to ask what issues someone has (though that may be weird). Most likely they are there because they have some medical issue. Sure, sometimes you’ll be wrong, but it’s a reasonable assumption.
I was making fun of your statement. It was stupid, so I also said something stupid. You’re supposed to see it and realize it’s dumb, and then reflect on your statement. At least you got the first step.
You complaining about “American defaultism being cringe” derailed the conversation. You could have ignored it or just made a correction if you wanted to stay on topic.
I agree with your statement, but you don’t need to rant about “American defaultism” when someone makes that assumption on a US topic in a largely US community.