With the volume of code people are generating, no you really can't just read it all. pg recently posted [1] that someone he knows is generating 10kloc/day now. There's no way people are using AI to generate that volume of code and reading it. How many invisible bugs are lurking in that code base, waiting to be found some time in the future after the code has shipped?
[1] https://x.com/paulg/status/1953289830982664236