Your system is much more secure with SIP in place because it makes big parts of your system immune to trojans and privilege escalation attacks, the two biggest ways malware creeps into your filesystem. It's not very difficult to disable (even permanently if you are inclined), and offers a big security boost.
And yes, it is Apple "Gatekeeping"... the same gatekeeping that's kept OS X almost completely free of major hacks for over a decade. I don't consider that annoying but to each his own.
It is vastly more destructive than IP v4. This affects end users directly, every single day. The number of times applications have crashed due to NULL related errors is probably in the tens or maybe hundreds of billions. Each time is an interruption of people's work and in some cases it destroys hours of work.
You can get a None type when you are expecting a String type... that is exactly the bug they are talking about. The fact that Python makes this problem BIGGER by allowing other types as well doesn't make it less bug prone.
On the Mac, it's easy, I use Chrome as my Flash jail. I use Safari all the time and the few times I need Flash I fire up Chrome and it's there. Don't have to worry about Flash hacks or Chrome battery drainage.
https://duckduckgo.com/?q=samsung+galaxy+benchmarks+cheating
Slightly different media, same idea. Check for testing criteria, vary the output.