Steam has died its final death on Windows 7 and 8: Nearly a year after Valve ended support, new Steam updates will no longer function on the ancient OSes
We don’t call 15 year old cars ancient. Blu rays aren’t ancient. CDs aren’t ancient. Tons of things are 15 years old and fallen out of general use but aren’t considered ancient.
Blu rays and CDs are considered ancient. Considering all the storage we have now, something like a CD is close to worthless for almost everyone. Blu rays could have their own niche still, but it's still considered ancient by modern standards. Technology evolves so fast, and it's hard to keep up.
Cars have an expected lifespan of like 20 years, operating systems don't.
Windows 7 came out with very early support for efi boot which took explicit effort to get to work. At this point most OEM machines out there don't even support the legacy booting mode. That is ancient by tech standards.