Bugs did exist, but bugs that come from AI generated code can be easily avoided if a good enough engineer designed it. Also, the rate at which AI generates code means that there's A LOT more bugs now than there used to be.

I'm sure the engineering teams of every company in the world is just "good enough engineers" and not, you know, regular devs who ship bugs at the same rate that has been now. And I'm sure your personal anecdote of "I saw a bug" shows that there's more bugs being shipped now.