I work in web development at a major, well-known company. My top of mind is exactly what the article is reflecting: how will this product/feature perform on a c

I work in web development at a major, well-known company. My top of mind is exactly what the article is reflecting: how will this product/feature perform on a craptop/low power ChromeOS device/cheap smartphone that isn't even sold in the U.S.? I can say first hand that our designers do not care about this. I have never heard any concerns around this even so much as uttered. I think part of this is due to a rigid 'design system' that, if adjusted to better accommodate for our craptop, etc. users, would require updating many other products to keep consistent. Thus, the problem is handwaved away with "that problem is only reflected on x% of DAU." There is so much design/development guidance around screen width, breakpoints, contrast ratio, accessibility and so forth, but so little around "real world" testing on low-tier devices. Every designer is using a 5K display with perfect color and definition, or an iMac with a super fast processor and tons of memory; our users are not.