I think that is a pretty good assumption to make. The vast majority of websites are being made for the average person to use, and the average person is using on

I think that is a pretty good assumption to make. The vast majority of websites are being made for the average person to use, and the average person is using one of the big browsers with more or less standard settings. You could write a website that doesn’t use JavaScript, is meant to be accessed primarily through curl, etc but if it’s a business project then you’re going to end up with a product that your users (average people) will view as more janky than otherwise, and you’ll spend more time and money on it too, for the benefit of 0.01% of the population who would be slightly inconvenienced if you didn’t.