18.1 is the gateway to 18.2 and 18.3 and most importantly 18.4. Hence the urgency. They want Genmoji and Image Playgrounds out in time for Christmas. And they absolutely have to hit the mark with the Siri stuff in 18.3 or 18.4, or poof there goes the recent stock runup.I honestly think that Apple could rather take 1-2 weeks more to polish 18.1 instead of releasing too fast.
AI features are not life changing imo and I’m pretty sure that most people who scream for AI on Apple devices won’t even use it regularly after the first week.