Pretty sure this is correct. You only notice it when it comes right out of the top. Other days it may be 25%, 50%, or 75% of the way up. And that's still bad for your oesophagus over the long term. My dad got cancer right at the bottom and one potential cause was chronic acid reflux (GERD leading to Barrett's eosophagus).

But there were no organisational problems according to Jack. Also do you really believe Block has reached peak productivity? Does any company ever reach it?

The quantity of devs is not changing though. If AI really makes the existing devs more productive then the plateau should become higher.