Calling this "hijacking the Amazon app" is hyperbolic in my opinion. They replaced the shortcut in the app drawer. To me this looks like normal scummy OEM behaviour, like pre-installing spyware, "anti-" malware, adware etc. which sadly pretty much every mobile/computer manufacturer does.
Replacing the OS is one of the first things I do with every laptop, PC and mobile device to get rid of (most) crap that was installed without my consent.
I usw pandoc to create slides from markdown:
```pandoc -t beamer slides.md -o slides.pdf```
And if you prefer HTML+JS slides, pandoc can do that too: https://pandoc.org/MANUAL.html#slide-shows
Replacing the OS is one of the first things I do with every laptop, PC and mobile device to get rid of (most) crap that was installed without my consent.