And both of these companies build and purchased more renewable energy sources than all 100+ countries combined. Microsoft has committed to be carbon free by 2030, and while I don’t belive in their commitment, they at least seem to be trying contrary to most nations. They even invested in nuclear plants for their power needs.
You can fault both companies for a lot of different reasons, but in terms of carbon emissions due to power usage, they are better than 99.9% of the countries on that list.
Apple is a bit like Microsoft in that regard. Their browser (safari) is so tightly integrated into their operating system that removing it is basically impossible. Due to that, they can use/abuse it for basic functionality like a pdf reader instead of creating a separate app for it.
Android, on the other hand, doesn’t even have a real default browser. While Chrome ships as the default since android 4, it’s basically just the app tacked on top. Since PDF readers on android existed before Chrome became the default, Google was never really bothered with including a build in PDF reader in their browser. It simply wasn’t necessary. And since most browser depend on chromium, which lacks this functionality, they don’t have it either.
Firefox on Android has the option to open PDFs, so if you want it, that would be an option. It isn’t a limitation of the operating system, Google simply couldn’t be bothered and most others just use copy + past on Chrome.