Earlier quoted context omitted.
If you buy a macOS machine today, it ships with bash3.2 by default. That's the last version that was GPLv2. It is a decade old by now. Some companies most definitely care.
As I've mentioned elsewhere, git is GPL, so Macs are screwed regardless. :P
It's not about GPL, it's about GPLv2 vs GPLv3 and the requirements that come with it.