I've no idea of the stats but I agree it does seem like an increase in news stories, and not just silly season as I feel like it's been over the last year or two.
If there is an increase it wouldn't surprise me. Both lockdown and fashion have increased the number of owners - the number of friends I have who had no jntetest in dogs previously but then bought one quite suddenly because the kids wanted one amazes me. As I hear it, training digs properly us quite a skill, and I dont believe all these new owners understood quite what needs to go into it.
Also, As pp said, with certain breeds they are specifically fashionable for looking tough, so bound to be disproportionately owned by quite aggressive owners or those who are more interested in training to defend / be security than safety.
I'm guessing the increase in demand and therefore price has also led to more irresponsible breeders.
I would say, from the point of view of someone who has never owned a dog, doesn't want to and whose child is actively scared of them, but does live in a popular dog walking area , dog owners having dogs off leads and not doing anything to stop them approaching other people or dogs, even when there and clearly frightened small children, because 'they're friendly ' is a bigger issue than children not being taught not to approach. I realise my experience will skew that view, but if my child was one who wanted to pet the dogs, i think it would be really hard to drum in the message not to when I see to be so surrounded by such laid back dog owners! They'd get really mixed messages. I'm talking so laid back they don't even tell their dog off or apologise if they kick the face of a child strapped in a buggy (yuck and terrifying for a toddler!)
I wouldn't want a dog because i see what a huge responsibility they are, but so many people seem to see them as something that is the norm for all families to have now, not a massive decision with a significant health and safety risk to be mitigated.