I believe the risk of running outdated software is super inflated and mediatic, 99% of people would be absolutely fine running a version of Android from 3 years ago or Windows 8.
That's the same thing people running windows XP on internet were thinking in 2017.
Then WannaCry arrived and they got their data encrypted :)
I don't know why the author of the video didn't mention it but LockDown mode is really useful.
At least for me the default is lockdown mode on and appropriate exceptions for websites I trust.