People have had ubiquitous cameras in their phones for a decade, but these fireballs happen way too fast to whip out your phone. The reason that we're seeing them more these days is because of the increasing prevalence of dashcams and home security cameras.

As a completely uneducated guess, I’d argue more cameras of decent quality, and more of them with motion detection etc.

There’s certainly a case for the more cameras argument, though it doesn’t apply to this specific event: almost every UK news article about meteors, lightning storms, and at one point a sonic boom from a jet, features a recording from someone’s video doorbell.

Around 2003, I was driving home from San Francisco back to Danville late at night. After the 580 tunnel, as I crested the hill, the entire sky lit up bright green and I saw a huge glowing ball like this that lasted for a few seconds. These days, I'd have dashcam footage to show you. I was driving alone and the roads were pretty much empty, and it's kind of weird when something so unusual happens and you feel like the only one who saw it.

I saw a bright green huge one in Portland, Oregon USA in the 2004-2006 time period. Only tool I had was my eyes and brain to recall it (and I can still recall it well).

I told a few people about it and moved on. I’m guessing that’s the most common response.