A vulnerability doesn't mean anyone has exploited it.Of course not, but with an increasing number of reports that patched zero days have been exploited, the trend is going in the wrong direction.
Fact is, most zero day exploits that we know about are targeted attacks at specific individuals from very well-funded state sponsors.
However, once a zero day exploit is known and patched, the methods uses are often published or often show up on the dark web for hackers to purchase and use against those who are behind in keeping up with security on their electronic devices –– namely people like you.
The big difference here is you know about these risks yet choose to do almost nothing about them.
You can continue to bury your head in the sand and refuse to update your sometimes decade old computers and software, just be aware of the danger you're putting yourself into. I guess you'll be safe until you aren't.
An example of this is the switch to the HTTPS protocol over HTTP for a more secure internet, and your anger about it. Instead of looking at yourself and your staunch refusal to upgrade as the culprit, you choose to blame Google for the change because you can't use an outdated version of macOS and an outdated web browser that are years past their sell-by date.
You're literally the only person I know who is having problems using your choice of web browser and can't reach some websites due to your stubbornness about these changes.
The world is changing and you are very slow to do the same, at least in computer terms.
Adapt or die, it's simply evolution at work.