The trajectory of the term “PC” will never not amuse me.
It used to be a specific brand of a category of products (“PC” was IBM’s “Home Computer”. That was the name of the category. “Home computers”, computers for the home)
Then because the IBM PC was 99% off-the-shelf parts and 1% a proprietary bios, as soon as a cleanroom clone of that bios was written, every manufacturer under the sun made their own “IBM Compatible”, and eventually, as IBM’s role in the whole thing became less and less relevant (… And eventually they tried to move to a new, incompatible format with the IBM PS/2, and this failed hard) it became “PC Compatible” – But what a “PC Compatible” was, even back then, was something that was constantly changing due to the multitude of companies making them. Their unifying factor being… Uhh… x86 architecture and some variation of DOS, which made them run the same programs more or less.
Eventually “PC” and “Computer” became interchangeable to most normies. With the word “Computer” even being considered “Old fashioned” by some.