Earlier quoted context omitted.
Apple has allowed users to download the “last compatible version” since 2012. I reset my first generation iPad - last updated 2011 - last year and was able to load and run older versions of most of the apps for streaming services that were available back then - Netflix, Hulu, Crackle, Spotify, Plex, etc.
"Last compatible" means no more security updates, which basically means - we no longer care about the flaws we've made, go ahead and risk your privacy (including for example your life savings if you bank online). Also, my experience with the last compatible version (for iPhone 4 IIRC) was that IIRC neither Skype nor Hangouts worked anymore. Plus the whole device was incredibly slow.
What exploit has there been in an app that let it exfiltrate data from another app or read your web browsing history for any version of iOS?
As far as Google, it’s no surprise that Google abandoned older protocols. That’s kind of their MO....