Care to elaborate how the choice of a person’s equipment and browser relates to GitHub constituting a single point of failure for the industry as the prevalent Git hosting tool?
In my opinion (you may differ), Apple and Google are notorious for locking their users onto their proprietary platforms to milk as much money as they can, no matter at what cost.
So complaining about Github proprietary tools and at the same time supporting Apple and Google for doing the same is a bit contradictory. Should be using an open OS and browser.
Again, the original thread said “The industry should avoid single points of failure”. Neither Apple (Mac) nor Google (Chrome) represent single points of failure for the industry.
From a software eng infra standpoint, in general, ok. But we can look elsewhere.
In the mobile space, for example, it's hard to deny iOS & Android, Appstore & Google Play.
In terms of privacy, the internet is a complete failure with Chrome, Google Analytics, etc.
A large chunk of the most relevant software businesses go to the extent of mandating developers to use Apple products. I experienced this myself, when I wasn't allowed to use a PC running Linux for "security reasons". Like if Apple OS is safer than Arch. That's a big point of failure, in my opinion...