The person who shot did it directly, without actually showing what was he carrying. Just showing the gun would have had a better effect with no injuries and no arrest, and that already is going over the top.
You are an asshole for defending getting hurt for this. I want to assume you would not be so eager to go against the kid if it was your family member.
Google still supports Google Play Services with security updates, and many of their apps and services are still updated via on-the-fly updates (non-app updates).
You can use the latest Youtube app compatible, it will most likely work. If not, just use the browser for it. Version 16.40.36 from October 16, 2021 is the latest one compatible with Android 5
Firefox still supports Android 5, and is the minimum requirement.
You can use AirDroid to mirror the screen of your phone to a desktop computer. Minimum requirement for it is Android 4.4
I used a Android 2.3.7 device for 2 weeks 6 months ago that goes to the internet using Via Browser, had GPS using a 2014 version of Maps still working to this day, old videogames still installed and called and sent SMSs just fine. You'll be fine.
30% Discount? You need to give the phone for free or for an extremely low shipment price.
This is a shit move to get money from more financially challenged people at that discount rate. It's not their fault they paid for something they need from an "unauthorized" sellers, and definitely a lot of people don't have the money to buy the phone again but from you.
Doesn't matter. In a few years what will be considered modern will no longer run this game unless the game is updated to just say "yup the game works here too"
Mobile OSes make breaking the knees of legacy support a sport they are champions at
There are ways to defuse a situation not entirely calmly without firing a gun.