I know some people feel like Apple is aggressive in this respect, but that's an 8 year old version of a browser. That's like taking off all of the locks on your house, leaving the doors and windows open all while expecting your house to never have uninvited guests.
should they be locking safari to the OS, definitely not. but users can just go download another browser if they are actually concerned.
I'd put it on the end user for not updating software on 15 y/o hardware and still expecting the outside world to interact cleanly.
That's probably true.
> 15 y/0
It's a matter of expectations, many laptops that old still work decently enough with a refreshed battery. Funnily enough win10 was released 15 ago, and one can still get support for it for at least another 3 years until 2028, even on the customer license.
Depending on where you live (or what websites you visit) it's not unreasonable.