I did this for work a few years ago in New Zealand and they run them through neighbourhoods with enough for each house and spare ones for errors and expansion. Particularly in commercial areas because some businesses need multiple lines.
The fibre itself is a piece of glass the size of a strand of hair with infrared shot down it, but with the casing it looks similar to that small blue one poking out there. Can’t remember exactly how many but that’s the size of a single line so you can fit a lot of them.
Does it include clicking onto the site through a google search for troubleshooting or something? Or is it registered users? Because I would count as using reddit in that case, even though it was through an Adblock and I didn’t click any further.